—Would you like to join me for a quick lunch before class?
— ______, but I promised Nancy to go out with her.
| A．I’d like to | B．I like it. | C．I don’t | D．I will |
The volunteers are doing _____ difficult and important work; they share _____ common goal — to help people in need.
| A．a; a | B．a; the | C．不填; the | D．不填; a |
----Go for a picnic this weekend, OK?
----___________. I love getting close to nature.
| A．I’m afraid | B．I couldn’t agree more |
| C．Have fun | D．I can’t follow you |
____ is no doubt ____ Jennifer will come to see me this weekend as usual.
| A．It; that | B．It; whether |
| C．There; that | D．There; whether |
He pretended _______ when his mother stepped into his room.
| A．to study | B．studying |
| C．to have studied | D．to be studying |
Johnny, you ______ play with the knife; you _____ hurt yourself.
| A．wont; cant | B．mustn’t; may |
| C．shouldn’t; must | D．cant; shouldn’t |