The government is trying to ______ pollution to an even lower level so that we can have a better environment.
| A．reduce |
| B．remove |
| C．collect |
| D．warn |
You can’t imagine what great difficulty I had _______ my father to agree to my plan for the holiday.
| A．persuading | B．persuaded |
| C．to persuade | D．persuade |
______ with so much trouble, we failed to complete the task on time
| A．Faced | B．Face | C．Facing | D．To face |
.Since Spring is here, you can ______ these fur coats till you need them again next winter.
| A．put on | B．put away |
| C．put down | D．put off |
Was ______ Alice, ______ played the piano very well, ______ helped me with my English?
| A．it;whom;that | B．this;who;who |
| C．it;that;that | D．it;who;that |
There are 55 students in Class 5, _______ failed in the test.
| A．all of which | B．all of them |
| C．none of whom | D．none of them |