摘要： -----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
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-----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
查看习题详情和答案>>-----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
查看习题详情和答案>>