问题

I could have offered you some help last weekend, but I _______ with my work at that time

A:would be occupied
B:was occupying
C:had been occupied
D:was occupied

正确答案是：

同类题型

Why did he come back? —It is ______ he forgot to take his umbrella with him

__ I’m terribly sorry th__ ________.

Firms that use computers have found that the number of staff _____ is needed for quality control can be greatly reduced.

How much time did you spend the new words in Unit 10

下列各句中划线成语使用正确的一项是（）