题目内容

No matter how bright a talker you are, there are times when it's bettersilent.
A．remainB．be remaining
C．having remainedD．to remain
D
【考点】非谓语—不定式
it做形式主语，真正的主语是后面的不定式：to remain silent. 可归结为句型：it is +形容词/名词+to do/that…。当然it也可以做形式宾语，如find/feel it +to do/that….。
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