问题

The new books are of great use, they _ well and _ already.

A:sell : sell out
B:sold : had sold out
C:sold : have sold out
D:sell : have been sold out

正确答案是：

同类题型

With the help of the teachers and classmates, the boy worked hard and finally caught up with his classmates Now he is _______ all the others

_______ used to _______ a post office near my house.

There’s ____ water on the playground, so we won’t have the PE class there

They______ with each other for two years before they got married

ering his health, I advise him to_____an hour or two each day to work out.