III. Fill in each blank with ONE suitable word.

Space exploration costs a lot of money. Is it really necessary? Up to now, very few astronauts have had chances to visit space. (11)___However_______ space research has benefited humans in many ways. Satellites in space send information to (12)___forecast_______ the daily weather. Communications satellites mean easy and instant contact (13)__between________ two people from afar. During the space trips, scientists can (14)___learn_______ more about human bodies. Some scientists even (15)___think_______ of finding new homes for mankind on another planet.

1.b

2.b

3.b

4.b

5.b

6.b

7.b

8.b

10. That city is most famous ______ its fashion shops. 
 A. to           B. with           C. for          D. of
11. My family had a lot of ______ in Hoi An and it was an exciting trip.
 A. fun     B. funny     C. enjoy       D. enjoys
12. International school in Ho Chi Minh City is _____ School in Viet Nam with high-tech facilities.
 A. the oldest      B. the younger      C. the most historic     D. the most modern
13. I'm meeting tom tonight ; it will be the first time I ______ Him since Christmas.
 A. saw     B. had seen     C. have seen       D. see
14. Please go and _____ a bath.
 A. wash      B. make    C. have    D. do
15. What time does Jane usually wake ______ in the morning?
 A. up        B. at        C. of      D. out

4. D

6. C

7. D

Have Nga already gone out?

7. c ( đề bài thiếu, phần c phải là is working)

8. b

9. a

10. a

1. b

2. a

3. b

 tam giác ABC có 3 góc nhọn( AB<AC ) kẻ hai đường cao BE cắt CF tại H.

a, CM: AE.AC=AF.AB

b, CM: Tam giác AEF đồng dạng với tam giác ABC.

c, AH cắt BC tại K, EF cắt BC tại D.

CM: EB là phân giác của góc DEK

         VẼ HÌNH GIÚP MÌNH NHÉ

IV. Rewrite the following sentences using the word in bold type.

1. How long is it since he found a new job?

when

2. It's a month since I saw Chris.

seen

3. I haven't spoken to him for a week.

last

4. When did she come back?

since

5. It's months since I saw Jane.

for