Question

 The teacher_____have thought Johnson was worth it or she wouldn’t have wasted time on him,I suppose.

A.should                                    B.can

C.would                                 D.must

 

Answer 1

【答案】

 答案:D

解析:“must have +動詞+ed形式”表示“一定做了某事”。根據(jù)所提供的情景or she wouldn’t have wasted time on him可判斷出老師一定認為Johnson值得教，要不她不會在他身上浪費那么多時間�！皊hould have +動詞+ed形式”表示“本來應(yīng)該做某事，而沒有做”，常用于表示責(zé)備。“can have +動詞+ed形式”表示“可能做了某事”。would用于表示虛擬、假設(shè)、條件等，有“要、將要、會、就會”等意思。