问题

30. —Why! I ____ get you on the phone.— We ______ basketball on the playground when you phoned.
A:didn’t; must have been playing
B:didn’t; must be playing
C:couldn’t; must have played
D:couldn’t; must be playing
B:didn’t; must be playing
C:couldn’t; must have played
D:couldn’t; must be playing
正确答案是:
同类题型
I would like________to the party last night but I had to work extra hours to finish a report
The headmaster is so wise that we believe he will lead the school to __________ future.
The old __B__well looked after by the government in China.
mmittee asked for these suggestions to be______ on paper, so that they might study them further.