--We________ in advance. Look, this restaurant is almost empty.

--Yes, just in case.

A. needn’t have booked B. mustn’t have booked

C. didn’t need to book D. couldn’t have booked

A

【解析】

試題分析：考查情態(tài)動詞和虛擬語氣。句意：--我們本來不需要提前預(yù)訂的，看，這家飯店的顧客幾乎寥寥無幾。--是的，為了以防萬一。情態(tài)動詞+have done表示對過去的事情進(jìn)行虛擬，needn’t have done本不必做某事；must have done一定已經(jīng)做了某事，這時不能用must的否定形式，mustn’t不能表示推測；couldn’t have done不可能已經(jīng)做了某事；根據(jù)句意可知，這里是“本不必”的意思，故選A。

考點(diǎn)：考查情態(tài)動詞和虛擬語氣

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