Cho hình thang ABCD đáy AB và CD. Gọi E và F là trung điểm của AB và BC. M và N là giao điểm của EF với AC và BD. Chứng minh rằng MN = DC - AB/2 ( DC > AB )

II. Complete each sentence so that it has a similar meaning as the sentence above, using the word given.

2. The lake is full of rubbish. They’ve decided to clean it up. ( because)

    - ......................………………………………………………………………………………….

3. There was a heavy rain. The roads were flooded.  (so)

   - …………………………………………………………………………………………………

4. I do not have a temperature. My face is red (but)

   - …………………………………………………………………………………………………

5. Wear a hat. You’ll get sunburnt. (or)

   - …………………………………………………………………………………………………

6. I wash my face regularly. I have oily skin. (because)

   - …………………………………………………………………………………………………

7. I think dancing is interesting because it makes me feel relax. (find)

- …………………………………………………………………………………………………

8. Minh finds carving wood boring because it takes much time. (think)

 - .........………………………………………………………………………………………….

9. We all find  painting interesting because it’s a creative activity. ( think)

- ………………………………………………………………………………………………….

10. Louis / moving / finds / to/ him / relaxed / dacing / because / his body / music/ easy / makes

                                                                                                                    ( Arrange the sentence)

- ………………………………………………………………………………………………….

11. doing / meaningful / volunteer / activity / work / society / is / a / for . ( Arrange the sentence)

- …………………………………………………………………………………………………….

12. objects/ see / you/ eating/ helps / more clearly/ more carrots /at night. ( Arrange the sentence)

- …………………………………………………………………………………………………….

13.  People need about 2,000 calories a day to stay in shape. ( Make question)

- …………………………………………………………………………………………………….

14. My mother has  done charitable work for five years. ( Make question)

- …………………………………………………………………………………………………….

15. He spends most of his free time carving eggshells. ( Make question)

- …………………………………………………………………………………………………….

16.  You / need / patient / to make / beautiful / gifts / eggshells. (Complete the sentence)

- ……………………………………………………………………………………………………

17. Eating  breakfast / important / it / give / you energy / the day . (Complete the sentence)

 - …………………………………………………………………………………………………..

18. Last week / we / plant / lot / trees / new park / close / school . (Complete the sentence)

- …………………………………………………………………………………………………..

19. We began eating when it started to rain. ( Present Perfect)

- We have …………………………………………………………………………………………..

20. When did you start your hobby? ( Present Perfect)

- How long …………………………………………………………………………………………

21. The last time I saw my uncle  was two years ago. ( Present Perfect)

- I haven’t …………………………………………………………………………………………..

22. I have never studied Japanese before. ( first)

- ………………………………………………………………..

23. He has played football for five years. ( ago)

- ……………………………………………………………………………………………………

24. She has worked for this volunteer organization since 2010. ( in)

- ……………………………………………………………………………………………………

II. Choose the suitable words or phrases for the banks. ( 2 pts )

1/ Hoa likes_________ Vegetables because it's good for her health.

    A. eat                   B. eating               C. eats             D. ate

2.Don’t read in bed, _______ you’ll harm your eyes.  

  A. or                                  B. and                   C. but               D . so

3. It's good to____ blood because you can save people's lives.

  A. help                                 B. use                   C. donate          D. collect

4. They_____ the beach one week ago.  

  A. cleaned                         B. clean                C. cleaning       D. to clean

5.My sister has a(n) _________, so she hardly hears any words from me.

  A. toothache                       B. cough              C. earache          D. headache

6. Have you finished your work ………………….?

A. yet                               B. for                  C. since            D. ever

7. Traditional volunteer activities include ………… money for people in need, cooking and giving food.

A. getting                       B. rising               C. raising                 D. taking

8. People who smile ……………. Are happier, and they live longer.

A. less                           B. more                C. little                    D. many

5. ________are those who do not have a home and really need help.

A. elderly people B. sick children C. homeless people D. disabled people

6. She often _______money to charitable organisations.

A. donate B. volunteer C. recycle D. plant

7. I think I_______him before.

A. meet B. met C. will meet D. have met

8. When I was a little girl, I often_________ the piano.

A. play B. played C. plays D. have play

9. Eat______junk food. It makes you fat!

A. less B. fewer C. more D. many

10. I have temperature,____I feel tired.

A. and B. or C. but D. so

11. She looks very red. She was outdoors all day yesterday. I think she has __________.

A. sunburn B. headache C. toothache D. flu

12. My grandparents _____exercise in their free time.

A. play B. collect C. go D. do

13. If you always buy flowers and put them in a vase to display in your house, your hobby is ________.

A. collecting flowers B. arranging flowers C. planting trees D.bird-watching

14. They hate ________noodles. They prefer rice.

A. eating B. eat C. eats D. ate

15. I find this hobby________because carved eggshells are unique gifts for families and friends.

A. interest B. interested C. to interest D.interesting

16. Go Greens _________the environment.

A. gives B. protects C. donates D. recycles

3. Choose the best option to complete each sentence. Circle A, B or C.

2. Choose the best option to complete each sentence. Circle A, B, C or D.