Question

You must _____your books to the library before this Sunday.

A will give B return C return back D borrow

Answer 1

You must _____your books to the library before this Sunday.

A will give B return C return back D borrow

答案：B
解析：归还图书 ，要用 return

Answer 2

B。 还书用RETURN。

Answer 3

B 没有return back to 这种用法

Answer 4

B 用动词原形