Bob would have helped us yesterday ,but he.A. was busy busyB. is busyC. had been busyD. wi

发布时间：2020-08-16 11:37:18


Bob would have helped us  yesterday ,but he    .
A. was busy busy
B. is busy
C. had been busy
D. will be busy

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(答案→)A. was busy busy
B. is busy
C. had been busy
D. will be busy
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