9. I believe that someone _____ into the house while she was out shopping.
(A)has broken
(B)must have broken
(C)would have broken
(D)can have broken

答案：登入後查看
統計： A(71), B(215), C(81), D(2), E(0) #392065

詳解 (共 1 筆)

#690770
must + V原 ＝對現況的推論
must + have + p.p = 對過去的推論

[補充]
must + V原 ＝義務、必須
* 只能用在現在或未來的狀況
You must come yesterday. (X) 

have to + V原 ＝勉強、不得不
15
0