问题

I could have turned to Mr. Smith for help,but he ______ too busy then.

A:Goodbeginning is half done
B:was
C:should be
D:has been

正确答案是：

同类题型

Could you please cut the price a little—Er … ______ you buy more than ten.

His father got very___when he made amistake again.

观察下面4个选项,从中选出不同类的选项。

I have no dreams _____ to have a happy life [ ]

The kind teacher devoted all her time she had ___________ her students.