__________ there is no law stating how you may dress, not all fashions are respectable.
| A．Because | B．Since | C．While | D．Unless |
Earth is a rocky planet _______ liquid water, which is necessary for life, can exist.
| A．as | B．which | C．where | D．when |
Everyone thinks he’ll go far in this company because he has all the qualities necessary_________ success.
| A．to | B．with | C．on | D．for |
. After suffering a heart attack, Michael Jackson was pronounced dead, _________ a tragic end to the world’s most popular entertainer.
| A．marking | B．to mark | C．marked | D．having marked |
After graduation I’d like to find a job _________ I can use what I have learnt at school.
| A．whose | B．which | C．where | D．that |
The traffic slowed down because of the heavy snow in Yushu county, presenting a new _________ to the recovery from the earthquake.
| A．suffering | B．disaster | C．challenge | D．damage |