_______ the crisis of economy (经济危机) getting more and more serious, the government is searching for ways to improve people’s life.
| A．As | B．With | C．When | D．If |
Parents should see to it _______ their children form the habit of brushing their teeth every day.
| A．this | B．that | C．whether | D．if |
The computer system _______suddenly while he was searching for information on the Internet.
| A．broke out | B．broke up | C．broke in | D．broke down |
Whatfun it is to walk alone withfull moon hanging in the sky.
| A．/; a | B．a; / | C．the; / | D．a ;the |
I insisted __________ to see a doctor, but he insisted nothing __________ wrong with him.
| A．on him to go; should be | B．he went; be |
| C．he go; was | D．he should go; is |
He studied hard, __________ the exam.
| A．aim at | B．aiming at passing |
| C．aiming passing | D．aiming to passing |