---You shouldn't have treated me that way.My heart is broken.
---I'm sorry，Paul. I didn't mean ________you.
| A．hurting |
| B．to hurt |
| C．hurt |
| D．having hurt |
If nothing ________, the oceans will turn into fish deserts.
| A．does | B．had been done | C．will do | D．is done |
— Have you heard about the recent election?
— Sure, it ________ the only thing on the news for the last three days.
| A．would be | B．is | C．has been | D．will be |
— I don’t understand why you didn’t go to the lecture yesterday afternoon.
—I'm so sorry, But I ________ my homework.
| A．had done | B．was doing | C．would do | D．am doing |
The girl has a great interest in sport and ____ badminton classes twice a week over the last three years.
| A．took | B．is taking | C．takes | D．has been taking |
（2013·北京卷) Don’t turn off the computer before closing all programs you could have problems
| A．or | B．and | C．but | D．So |