15.children are often told not to play fire.
A、 on B、 at C、 for D、with
14. _______ do you want to be when you grow up ?
A. What B. How C. Who D. When
13. The visitors _________ here two hours ago .
A. arrived in B. got to C. arrived D. arrived at
12. Mr. Smith ________ an hour on this work .
A. spent B. took C. used D. paid
11. Last Saturday , we visited _________ house in the country .
A. the Green B. the Greens’ C. Greens D. the Greens
10. She met her uncle _________ her way _________ school .
A. at , / B. on , / C. at , to D. on , to
9. My apartment is not _________ .
A. big very much B. enough a big C. a big enough D. big enough
8. We _________ in this school for about two years .
A. study B. studied C. will study D. have studied
7. We saw many people wait for the bus ___________ .
A. at the bus stop B. in the way C. on the way D. by the way
6. I like the green coat , ________ my mother likes the red one better .
A. and B. but C. so D. or