Alice has gone to the classroom and she didn’t say ________.
| A．when did she come back | B．when would she be back |
| C．when she came back | D．when she would be back |
I will telephone the police and complain about it__ the noise stops soon.
| A．unless | B．though | C．because | D．if |
Take the exam carefully, __ you won't get good marks.
| A．and | B．or | C．so | D．but |
The students__to be very strict with themselves in their study and work.
| A．can | B．may | C．ought | D．should |
My brother can work out problems__ than any other student in his class.
| A．quickly | B．quick |
| C．more quickly | D．quicker |
The music in Voice of China sounds very__. I enjoy it very much.
| A．well | B．beautiful | C．wonderfully | D．boring |