If you don't know the word, you can _____ in the dictionary.
| A．look it after | B．look at it | C．look for it | D．look it up |
There are many people downstairs. What do you think _____?
| A．to happen | B．is happening | C．is happened | D．happened |
Each of us has to write a ______ report every two weeks.
| A．two-hundred-word | B．two-hundreds-word |
| C．two-hundreds-words | D．two-hundred-words |
Tens years ago, there _____ full of fish in the lake .Now there are _____ fish .
| A．used to live; little | B．had; a few |
| C．were; many | D．used to be; few |
The doctor did what he could _____the dying man.
| A．save | B．to save | C．saved | D．saving |
－How many workers are there in your factory?
－______ the workers in my factory_______ over two thousand .
| A．The number of , is | B．The number of , are |
| C．A number of, is | D．A number of , are |