He borrowed these books five days ago. (改为同义句)
He ________ ________ these books for five days.
The students played happily at the party last night.
A.has fun B.have a good time C.enjoyed themselves D.playing sports
There are more than three thousand books in the library.
A.only B.about C.less than D.over
Although the math problem is a little difficult, I want to work it out alone.
A.by ourselves B.by herself C.by myself D.by themselves
I think teenagers have the ability to make their own decisions.
A.must B.are allowed to C.may D.are able to
We should help each other.
A.one another B.good friends C.the others D.poor people
