问题
选择题
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
搜题请搜索小程序“爱下问搜题”
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
