5. Many tours to Africa have been______ Ebola-hit areas are in West Africa. A. although B. so C. when D. because 6. If you follow these simple rules, ____ will you save money but also the environment will be cleaner. A. only not B. Not C. not only D. not so 7. Public libraries have been ____ to encourage children to read books. A. to open B. opened C. opening D. open 8. They have raised a lot of money to help the poor, ___? A. have they B. do they C. haven and they D. did they 9. Solar energy is being used in some mountainous areas, ______ the national electricity grid still cannot reach. A. which B. in where C. what D. where 10. He was named _____ a famous singer. A. for B. to C. after D. from 11. Iwish that my students _____ to work so much on the farm just to gt to school. A. did have B. has C. had D. were 12. Hoa: "Do you mind if I sit here?" -Lan: "____" A. Congratulations B.That's a good idea C. Please do D. No, thanks 13. I know the man______ is talking to Rita A. who B. when C. which D. whose 14. Can you turn ____ the air conditioner? It's too hot. A. off B. on C. up D. down 15. It takes him five minutes ______ to the post offfice. A. walk B. walking C. walked D. to walk 16. “Shall we go out for a swim?” - "_____" A. Yes, we go B. Yes, let's C. Yes, we can D. Yes, we are 17. If I had enough money, I _____ abroad to improve my English. A. will go B. would go C. should go D. can go 18. You have never read this article on the Wesbsite, ______? A. in you B. do you C. have you D. have you 19. My brother has to go to work _______ it is raing very hard. A. even though B. because C. however D. in spite of 20. She has made a good_____ on everyone in my class. A. impressed B. impressive C. impression D. impress