Everyone should play a part_____the earth.
| A．to save | B．saved |
| C．for saving | D．in saving |
——Excuse me, do you have a computer?
—— Sorry ! I don’t have one.
——Thank you .
A. at all B. a little C. all the same
—What are you doing ?
—I’m my purse, but I can’t ________ it.
A. finding, look for B. looking, find C. looking for, find
English is very __________ , I like it very much.
A. difficult B. interesting C. Boring
–Do you have any time this afternoon?
--Yes, ___________
A. I have no time. B. I am free. C. That’s OK.
—do you go to the library?
—Once a week.
A. How many B. How often C. How long