―Catherinelookssad.Didyoutellherabouttheaccident?―Yes,...

問題詳情：

 ― Catherine looks sad. Did you tell her about the accident?

― Yes, but I ________ her just before her final exams. 

       A. shouldn’t tell                                               B. mustn’t have told     

C. needn’t tell                                                  D. shouldn’t have told

【回答】

知識點：虛擬語氣與情態動詞

題型：選擇題