Question

Adults always tell their children ____ to strangers when they are alone.

A.not taking B.not talk C.don’t talk D.not to talk

Answer

D

【解析】

句意：成年人总是告诉他们的孩子，独处时不要和陌生人说话。

考查动词不定式作宾语补足语。not talking不说话；not talk不说话；don’t talk不说话；not to talk不说话。根据句中有tell可知，此处是句型tell sb.(not) to do sth.，表示“告诉某人（不）要做某事”，所以此处用动词不定式否定形式not to talk。故选D。