Nowadays there are still a number of students school at various grades due to a lack of money in some poorer areas.
| A．leaving out | B．making out | C．letting out | D．dropping out |
It is the protection for the trees___________ really matters, rather than how many trees are planted.
| A．what | B．that | C．不填 | D．which |
We can’t go on with the experiment because the computer_________.
| A．hasn’t been repaired | B．hasn’t repaired |
| C．is not repaired | D．hadn’t been repaired |
The two sides have finally___________, though some small differences still exist.
| A．made a decision | B．reached an agreement |
| C．settled down | D．broken up |
He has a part - time job and was paid___________.
| A．by the hour | B．by an hour | C．by hour | D．each hour |
The sunlight came in____________ the windows in the roof and lit up the whole room.
| A．through | B．across | C．by hour | D．each hour |