Now that you’re grown up，you’d better spend your time just on the things you find_______.
| A．worth doing them | B．worth being done |
| C．worthy of doing them | D．worthy of being done |
—I’m going to the States.
—How long ________ you ________ there?
| A．were; stayed | B．are; staying |
| C．have; stayed | D．did; stay |
Can we ________ the internet when we study?
| A．make use of | B．make fun of |
| C．make room for | D．make a decision for |
The country has ________ too many wars in the past ten years.
| A．gone all out | B．gone through |
| C．gone in for | D．gone over |
—Everybody is going to climb the mountain . Can I go too , mom ?
— ______ Wait till you are old enough ,dear.
| A．Will you | B．Why not ? |
| C．I hope so | D．I’m afraid not |
—I wonder how much you charge for your services.
—The first two are free the third costs $30.
| A．while | B．until | C．when | D．before |