问题

Mary really hard on his book and thinks he’ll have finished it by Friday.

A:worked
B:has been working
C:had worked
D:has worked;

正确答案是：

同类题型

Jane is one of the students inthe class have ever beento China. A.who B. whose C.which D. whom

《红楼梦》作者是（）

It was almost midnight when the fire ____ in theneighborhood

Does this meal cost $50? I __________ something far better than this!

Lily doesn’t know ________ she and her friends can doto help the little boy ________ parents have left their hometown for makingmoney.