Living things are dying out quickly. Let’s ask ____ destroying them in the past years.
| A．what part people have been playing |
| B．people have played in |
| C．what part people have played in |
| D．people have been playing what part |
They’re not playing baseball today ___________ the rain.
| A．because | B．as | C．since | D．because of |
I have no idea ________ is better, so I took _______ of them.
| A．what, both | B．what, none | C．which, both | D．which, all |
The country has ________ too many wars.
| A．gone down | B．gone through | C．gone along | D．gone up |
---I don’t think he has found a job yet because I saw him at home just yesterday.
---________!
No problem B. Maybe
C. Exactly D. Good id
The school rules state that no child shall be allowed out of the school during the day, __________ accompanied by an adult.
| A．once | B．when | C．if | D．unless |