Cho △ABC cân tại A. Trên cạnh BC lần lượt lấy D và E sao cho BD = CE (BD < BC/₂)

a) Chứng minh AD = AE.

b) Kẻ DF ⊥ AB tại F, EG ⊥ AC tại G. Chứng minh: △BDF = △CEG

c) Gọi H là giao điểm của FD và GE. Chứng minh: △DEH cân.

Giúp mik với mik cần gấp, vẽ hình giúp mik nha mn, ko vẽ cũng ko sao, vẽ hình hay ko tùy mn nha ~ =<<<

Choose the most suitable word or phrase for the blank:

1. The students are waiting __________ the teacher.

A. to B. at C. for D. Both A & B

2. She needs _________ those medicines.

A. has B. have C. having D. to have

3. Our teacher told us _________ this book.

A. read B. to read C. reading D. to reading

4. The ________ of the flu include a headache, a high temperature and aches in the body.

A. symptom B. symptoms C. cure D. cures

5. They had to fill __________ their medical records.

A. in B. at C. on D. up

6.Were you ever _________ from school last semester?

A. late B. early C. absent D. lost

7. What’s wrong __________ you?

A. to B. with C. about D. þ

8. Yesterday they had a __________ check-up.

A. medical B. medicine C. medicines D. medicinal

9. ________ is a shop where you can buy medicines.

A. Bakery B. Toy store C. Shoe store D. Drugstore

10. You can go back to the waiting room.

A. follow B. return C. get on D. stand

11. She will be back ________ a few minutes.

A. in B. at C. on D. when

12. What’s your surname?

A. middle name B. full name C. family name D. forename

13. ________ is a condition of the body when it is too hot because of illness.

A. Cold B. Feve C. Cough D. Flu

14. Follow ________, please!

A. I B. me C. my D. mine

15. She’s 145 centimeters _________.

A. tall B. high C. heavy D. old

16. Nga is filling _________ her medical records.

A. from B. for C. in D. on

17. The doctor needs ________ her temperature.

A. take B. taking C. to take D. will take

18. Would you ________ English, please?

A. talk B. speak C. tell D. spoke

19. We are having a ________ check-up.

A. medical B. medicine C. medically D. medicine

20. I need to weigh you. Would you get _________ the scales, please?

A. on B. in C. at D. to

21. The doctor _________ you in a few minutes.

A. see B. will see C. saw D. sees

22. My brother ________ a new job there.

A. start B. starts C. starting D. started

23. The nurse told Hoa ________ back to the waiting room.

A. goes B. going C. went D. to go

24. Hoa fills in her medical ___________.

A. record B. measure C. form D. both A & C

25. The medicines __________ the pain in my chest.

A. prevented B. relieved C. protected D. hurt

26. Everybody __________ the symptoms but nobody knows a cure.

A. know B. knows C. knowing D. knew

27. Did you play baseball yesterday?

A. Yes, I was B. No, I didn’t C. Yes, I did D. both B & C

28. We should _________our hands before meals.

A. wash B. washed C. washing D. to wash

29. What was wrong _________ you?

A. with B. about C. from D. over

30. Did your Mom write a sick note _________ you?

A. from B. for C. of D. at

Help me!

Choose the best answer for the blank:

1. I received a letter _____ your aunt last week.

A. on B. in C. from D. at

2. Her brother is taking morning ______ now.

A. hygiene B. exercises C. breakfast D. homework

3. Don’t eat candy or stay _______ late.

A. from B. with C. up D. for

4. We are very happy _______ the final exam.

A. pass B. to pass C. passing D. passed

5. They always ________ their teeth after meals.

A. comb B. wash C. do D. brush

6. Don’t worry about me, Mom. I know how to take ________ of myself.

A. care B. careful C. carefully D. careless

7. You must ________ to bed early.

A. go B. went C. going D. to go

8. She’s looking _________ in the mirror.

A. himself B. herself C. myself D. itself

9. I hope you ________ me after the harvest.

A. visits B. visiting C. will visit D. visited

10. ________ did she go to the dentist last week? – She had a toothache.

A. When B. What C. Why D. Who

11. You shouldn’t eat too much sweet things _________ it’s not good for your health.

A. because B. because of C. so D. why

12. I hope that she _______________ better soon.

A. feel B. feels C. to feel D. feeling

13. She had to work _________.

A. hard B. hardly C. difficult D. difficulty

14. I was really happy __________ Mark again yesterday.

A. A see B. to see C. seeing D. to seeing

15. Few people like __________ on the farm.

A. work B. to work C. working D. both B and C

16. He’s really bad _________ History.

A. in B. to C. at D. for

17. Her mother wanted her __________ up early.

A. get B. to get C. getting D. to getting

18. I think you don’t have to worry _________ that.

A. of B. to C. for D. about

19. The dentist smiled _________ him kindly.

A. with B. at C. to D. on

20. I have a toothache so I’m going to the _________.

A. nurse B. doctor C. dentist D. teacher

21. We ought not to eat too much candy because it’s bad _________ us.

A. with B. at C. of D. for

22. Baker is very ________. She can do a lot of things.

A. useful B. helpful C. beautiful D. full

23. I’m glad ________ you are well.

A. hear B. heard C. to hear D. hearing

24. My younger sister ________ a toothache last week.

A. has B. is having C. had D. will have

25. They are working hard ________ the farm now.

A. in B. on C. at D. of

Help me!

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