Nomatterhowbrightatalkeryouare，therearetimeswhenit'sbet...

問題詳情：

No matter how bright a talker you are，there are times when it's better ________ silent.

A．remain  B．be remaining

C．having remained  D．to remain

【回答】

D　[it作形式主語，真正的主語是後面的不定式：to remain silent 可歸結為句型：it is＋形容詞/名詞＋to do/that...。當然it也可以作形式賓語，如find/feel it ＋to do/that...。  ]

知識點：非謂語動詞

題型：選擇題