The expert says that nowadays there are too many problems linked to poor diet and a ________of exercise.
| A．limit | B．lack | C．need | D．demand |
The students encouraged _____ to go on.
| A．one after another | B．one another | C．the other | D．one by one |
-- Who broke the glass?
- I suppose _____ must be one of the children.
| A．the one | B．he | C．it | D．who |
She cut the cloth with _____ scissors.
| A．a couple of | B．a pair of | C．two | D．a |
It is reported that _________ schools are improving their IT environment.
| A．a great many | B．a great deal | C．a large amount of | D．a large part of |
He became famous ______.
| A．in the sixties | B．in the sixty | C．in sixties | D．in sixty |