sb cannot think of anythink to say

He stood up on stage to compete, and, of course,
his mind went blank!  Google

As he was about to activate the warp drive, his mind went blank;
his unconscious body slumped inside the ship’s capsule. Google

He felt like he was to blame for his father’s
death and his mind went blank.  google

učební osnova/obsah učiva, které má škola zajistit, které si příp. volí sama

It is certainly true that at the time of Butler Education Act the school curriculum was not much discussed in public. BNC

The hardening of the position was proclaimed by the DES in A framework for the school curriculum published in 1980. BNC

Inevitably the comitee had to consider the effect of public examinations upon the school curriculum. BNC

lekce od života, tvrdá škola života

Teachers taught me what I should know; the school of hard knocks taught me what I must know. (Wayne Magnuson: English Idioms)

An early training in the school of hard knocks was good preparation for a career in politics.
(Cambridge International Dict. of Id.)

Call it the school of hard knocks, the street reality. WebC

názor na určitou věc sdílený nějakou skupinou lidí

And even stronger attack on the view that harmony and equality characterize the relations between men and women arises within the radical feminist school of thought. (BNC)

He appears to have written nothing at all, but he was the founder of a school of thought that touched on all aspects of life and that may have been a kind of philosophical and religious order. WebC

There is a school of thought that believes all personality disorders are just more severe forms of Narcissism, with Paranoid personality disorder being the most extreme. WebC

"padla" pro dnešní den nebo celý školní rok

When the bell rings at 3:30, school's out! Yea! (Magnuson: English Idioms)

Count the days, hrs, min, sec until school is out for Christmas vacation! WebC

After school is out in April, we have a week of teacher's meetings where we evaluate the year. WebC

stupid jokes that are rude but not offensive

One thing that always annoys me is that people refer to this kind
of thing as "schoolboy humour" as if that's an automatic slant. Google

As was pointed out earlier, this is schoolboy humour, and I don't know why he bothers
because the truth is that he is vegetarian-friendly. Google

With his schoolboy humour and distinctive,
cheerful voice, "Johnners" was a friend to millions of radio listeners.  Google

wonder, be puzzled, what to do, think or answer

 He looked back at her and scratched his head seriously. Google

The Ethiopian scratched his head and said, 'It ought to be 'sclusively a rich fulvous
orange-tawny from head to heel, and it ought to be Giraffe;  Google

 Ivan scratched his head and said: "See here;
such nastiness!  Google

střední škola

The curriculum at secondary schools also began to take a predictable shape, Mathematics, English, Re and PE for all plus a - from six option. BNC

This appears to assume that most secondary school departments have scrapped all their previous work and started again. BNC

It was the third week of our third year in secondary school. BNC

think or act sensibly after studying the facts or being given advice

Rationalists see reason as the faculty by which fundamental
truths are intuitively apprehended. Google

Even in dangerous times, Christians see
reason to hope. Google

Schopenhauer sees reason as weak and insignificant compared to Will; Google

think or act sensibly

EU sees sense on eCommerce. Google

Corporations see sense in big donations to NAACP By Steve Miller THE WASHINGTON TIMES. Google

 made to see sense. Google

become more mentally alert, able, inventive or cunning

A silent person reserves all this energy and utilises it for a better purpose, be
it to sharpen his brain or memory power for which all the educated yearn for.  Google

Adversity merely serves to sharpen his
wits and he is always busy cooking up some scheme. Google

Petruchio is the kind of man who would want a mate with similar qualities
to his own to challenge him, sharpen his wits and keep his interest.  Google

objasnit (něco)

The Codex Madrid shed a great deal of light on Leonardo's fascination
with clocks. google

Probability and statistics can shed a great deal of light
on how to set up decision making groups with real horsepower. google

They shed a great deal of light on the subject of immigration as well as New
Zealand’s investment potential. google

if sth slips your mind, you forget about it

This just slipped my mind, but it's back now.... Call it a senior moment,
but he has a very valid point. Google

I forgot to phone you last night. I'm sorry. It slipped my mind. google

I forgot to phone you last night. I'm sorry. It slipped my mind. Gogle

to speak figuratively

"Catching" up, so to speak. google

March came in like a lamb, so to speak, but we hope that the end of
the month will not follow tradition!.  gogle

Part of every misery is, so to speak, the misery's shadow or reflection: the fact that you don't merely suffer but have to keep on thinking about the fact that you suffer. I not only live each endless day in grief, but live each day thinking about living each day in grief."
  --  C.S. Lewis

share a way of expressing oneself

There is a saying that mystics
speak the same language, and that is the case.  google

Do Muslims and Christians speak the same language? Google

The challenge facing many smaller entrepreneurs and real
estate institutions is the ability to speak the same language.Google