About 5,000 men and women competed for medals in ________ 21st Winter Olympic Games.
A a B the C an D /
Some people choose jobs for other reasons _____money these days.
| A．for | B．except | C．besides | D．with |
_____he had not hurt his leg, John would have won the race.
| A．If | B．Since | C．Though | D．When |
I won’t call you, ________ something unexpected happens.
| A．unless | B．whether | C．because | D．while |
The manager suggested an earlier date _______ the meeting.
| A．on | B．for | C．about | D．with |
Leaves are found on all kinds of trees, but they differ greatly ________ size and shape.
| A．on | B．from | C．by | D．in |