23. We went into a hall, on_____walls hung a few pictures of some famous scientists.
| A．its | B．which | C．whose | D．Those |
He wrote a long letter ______ he explained what had happened in the accident．
| A．what | B．which |
| C．where | D．how |
—The constant noise around here______ me crazy！
—Calm down．It’s no use complaining．
| A．drove | B．drives |
| C．is driving | D．had driven |
—Hurry up！There’s a bus coming！
—Why run？There will be_____one in two or three minutes．
| A．another | B．other |
| C．the other | D．any other |
upset
| A．usage | B．pollute |
| C．August | D．dusty |
polish
| A．remove | B．worry |
| C．consider | D．honest |
cheer
| A．machine | B．school |
| C．chain | D．chemist |
crowd
| A．owner | B．flow |
| C．window | D．flower |
updated
| A．liked | B．dreamed |
| C．carried | D．needed |
In our class there are 50 students，half _________ wear glasses．
| A．in whom | B．in them |
| C．of whom | D．of them |