-----Why? I didn’t get you on the phone.
-----We ________ football on the playground when you phoned.
A.must be playing | B.must play |
C.must have played | D.must have been playing |
推荐套卷
-----Why? I didn’t get you on the phone.
-----We ________ football on the playground when you phoned.
A.must be playing | B.must play |
C.must have played | D.must have been playing |