—Youdidn’twaitforTomlastnight,didyou?    —No,butwe

問題詳情：

 —You didn’t wait for Tom last night, did you?    —No, but we _______. He didn’t return home at all.

 A. couldn’t have      B. needn’t have      C. didn’t need to      D. should have

【回答】

C

知識點：虛擬語氣與情態動詞

題型：選擇題