问题补充:
Bob would have helped us yesterday, but he
A. was busy
B. is busy
C. had been busy.
D. will be busy
答案:
(答案→)A. was busy
B. is busy
C. had been busy.
D. will be busy
解析:可联系答.案.网客服索取。
时间:2019-12-25 14:40:36
Bob would have helped us yesterday, but he
A. was busy
B. is busy
C. had been busy.
D. will be busy
(答案→)A. was busy
B. is busy
C. had been busy.
D. will be busy
解析:可联系答.案.网客服索取。