The River Nile _______ flood large areas, but now the water of it _______ produce electricity.
A.used to, is used to | B.used to, used to | C.is used to, is used to | D.is used, to used to |
推荐套卷
The River Nile _______ flood large areas, but now the water of it _______ produce electricity.
A.used to, is used to | B.used to, used to | C.is used to, is used to | D.is used, to used to |