In order to make our city green, _________.
| A．it is necessary to have planted many trees | B．many more trees need to plant |
| C．we must plant more trees | D．our city needs more trees |
To the passengers' anger，they were robbed ________all their money.
| A．of | B．off | C．from | D．away |
Eric even didn't have ______common sense to dial the number 119 when _____fire broke out.
| A．a；the | B．a；/ | C．/；the | D．the；a |
It rained heavily outside，________made us stay at home all day.
| A．which | B．why | C．that | D．what |
You can't get the expensive house________you have lots of money.
| A．if | B．unless | C．when | D．since |
The sportsman ________save a drowning boy that afternoon；the boy's parents appreciated him very much.
| A．might | B．could | C．was able to | D．must |