9. The_________ of his paper craft brought him the first prize in his school’s competition.
A. unique B. uniquely C. uniqueness D. uniqueity
⇒ Vì có the .. of nên đây là danh từ
10. Nam_________ the Internet a lot to find useful information for his studying.
A. Surfs B. types C. checks D. look ups
⇒ Surfs the Internet : lướt web
11. The Internet allows us to communicate _________friends from different parts of the world.
A. To B. with C. for D. of
communicate with : giao tiếp với
12. _________aerobics 30 minutes a day will improve your full-body flexibility and strengthen your bones.
A. Doing B. Making C. Taking D. Using
⇒ Doing aerobics : Tập aerobics