—What’s up? You look down.—I have piles of papers ________, but I type so slowly.
| A．to be typed | B．typed | C．to type | D．being typed |
The number of students in our school about 30 000 and them study hard.
| A．is;a large amount of | B．are;a number of |
| C．is;large amount of | D．is;a large number of |
A library together with 5000 books for the school.
| A．was provided | B．were provided |
| C．provided | D．have provided |
They had beenfor many years.
| A．lost touch with | B．out of touch |
| C．lost touch | D．out of touch with |
Isnecessary to complete the design before National Day?
| A．this | B．that | C．it | D．he |
It was not until 1920regular radio broadcast began.
| A．while | B．which | C．that | D．since |