change the subject

start a different topic in the course of a conversation or discussion

I tried to change the subject by commenting on the lack of activity in front of our position.  BNCI

At the stage of our acquaintance I was unaware of when to change the subject.  BNCI

Every time I tried to change the subject, she'd close her eyes, hold up her hand and say, `;I haven't finished yet.';  BNCI

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