As a student, you should try to ______ being late for your class.
| A．avoid | B．refuse | C．prevent | D．punish |
. The young man，who by then admission to university，decided to do some part-time jobs to gain more practical experience．
| A．gained | B．was gaining | C．has gained | D．had gained |
We work together to achieve our common purpose：_________world that is safer, cleaner and healthier than one we found．
| A．the；the | B．a；不填 | C．a；the | D．the；不填 |
Boris has brains. In fact, I doubt whether anyone in the class has ____ IQ.
| A．a high | B．a higher | C．the higher | D．highest |
William’s first stop was in _____ is a small town under the Himalayas.
| A．where | B．which | C．that | D．what |
_______ you feel exhausted after the long tiring journey, you may as well take a good rest at home.
| A．So that | B．In that | C．Now that | D．In order that |