---The air pollution is terrible.
--- It will be worse we take action to protect the environment.
| A．if | B．unless | C．so | D．though |
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 |
——I think I’m lost．Could you tell me _________?
——Go straight up the street about two blocks, then turn left．
| A．where is the railway station |
| B．how I can get to the railway station |
| C．whether I can get to the railway station |
| D．what could I do to get to the railway station |