The Nile River ____ flood large areas but now the water ____ produce electricity.
| A．used to; is used to | B．used to; used to |
| C．was used to; is used to | D．was used to; used to |
---- Tom, what do you think of the iphone5 I bought for your birthday?
----_______ It’s everything I’ve been looking for.
| A．Perfect! | B．Good idea! | C．Not bad. | D．So-so. |
He hesitated for a moment before kicking the ball, otherwise he a goal.
| A．had scored | B．scored | C．would score | D．would have scored |
It was hard for him to learn English in a family, in which_____ of the parents spoke the language.
| A．none | B．neither | C．both | D．either |
It was nine years ago, when I came to China for the first time ____ I began to learn Chinese.
| A．where | B．how | C．that | D．which |
If you really have to leave during class, you’d better leave____ the back door.
| A．for | B．at | C．by | D．out |