—____ are you? —I’m twelve.A. How B. How old C. Who
I’ll work hard to make a lot of money ______ I can buy a big house.
—I have a ______. What should I do? —You should see a dentist.
The bank promised to provide us ______ money.
Peter has ______ cough and he has to get ______ X-ray.
6. --- I don’t know ______ I can improve my English. --- You can read some English books and magazines.