It’s not bad manners to play a trick ____ your friend on April Fool’s Day.
| A．in | B．on | C．to | D．about |
The teacher called Tim’s mother ________ what he had done in the test.
| A．because of | B．because |
| C．since | D．as |
The artist made up his mind to devote all he could his English before going abroad.
| A．improve | B．to improve |
| C．to improving | D．improving |
For many cities in China, there is no room to spread out further, _______ Yangzhou is an example.
| A．for which | B．in which |
| C．of which | D．from which |
The early pioneers had to _____ many difficulties to settle down on the new land.
| A．get along with | B．go after |
| C．go over | D．go through |
--- Did you arrive at the stadium early yesterday afternoon?
--- Yes. It was not yet 2 o’clock I got there.
| A．that | B．before |
| C．until | D．when |