-- Don’t cross the road when the traffic lights are red.
-- .
| A．No, I will. | B．Yes, I do. |
| C．OK, I won’t. | D．No, I don’t. |
----Did you go to Jack’s birthday party?
---No, I____.
| A． am not invited | B．wasn’t invited |
| C．haven’t invited | D．didn’t invite |
--- Did I lock the door when I went out?
--- Yes, you did. I saw you _____ it.
| A．locking | B．lock |
| C．to lock | D．locked |
---You have to work very hard in your job, don’t you?
----Yes, but I don’t mind that. I _____ hard.
| A．used to work | B．am used to work |
| C．am used work | D．am used to working |
--- I don’t know ______ my telephone number.
--- Through a friend of mine.
| A．what did you get to know | B．what you got to know |
| C．how did you get to know | D．how you got to know |
---David，is that man your Chinese teacher?
---It___________ be him．He’s having a meeting．
| A．mustn’t | B．can’t |
| C．needn’t | D．won’t |