Bobwouldhavehelpedusyesterday,buthe_____
题型:选择题
问题:
Bob would have helped us yesterday, but he _________. [ ]
A. had been busy
B. is busy
C. was busy
D. will be busy
Bob would have helped us yesterday, but he _________. [ ]
A. had been busy
B. is busy
C. was busy
D. will be busy