Circle the best option A, B, C or D to complete the sentences

Circle the best option A, B, C or D to complete the sentences:
8. The_________growth rate of Vietnam reached about 8.0% in 2007.
A. economic B. economically C. economical D. economy
9. I came ..................an old friend while I was walking along the street.
A. across B. into C. over D. for
10. Sarah has to stay in bed for a few days _________ she is sick.
A. because B. and C. but D. although
11. Mathew studied Physics _________ England from 2002 to 2006.
A. at B. about C. in D. on
12. If only she …………English well.
A. speaks B. has spoken C. spoke D. speaking
13. It’s very late. We suggest _________ a taxi to get to the airport.
A. catch B. catching C. to catch D. caught
14. Environmental _________ is a serious problem facing mankind today.
A. pollute B. polluted C. pollution D. polluting
15. Your brother passed the final exam, _________?
A. does he B. doesn’t he C. did he D. didn’t he
16. Jennifer Aniston, _________ is perhaps best known for her role in “Friends”, has
also appeared in several major films.
A. that B. who C. whom D. which