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
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