Cho ΔABC vuông tại A.

Phân AM,phân giác của \(\widehat{B}\) cắt AM tại E.

IK đi qua E//BC ( I ∈ AB, K ∈ AC)

a, Tính BM

b, Tính \(\frac{AE}{AM}\)

c, Tính IK

Find the words that need correcting.

1. Hundreds of(A) houses destroyed(B) after a tornado hit(C) the small town(D)

of Texas.

2. The earthquake occurred(A) at midday(B) when many(C) people had had(D)lunch.

3. Water(A) pollute(B)in the lake has made(C) the fish die(D).

4. Factories(A) won't dump(B) waste into(C) rivers if the government will fine(D) them heavily.

Combine the following sentences using the words in brackets.

1. Noise pollution happens. There is a change in animals' living pattern. (causes)

→ ....................................................................

2. Radioactive pollution is very dangerous. It can cause abnormal growth. (since)

→ ......................................................................

3. The area is uninhabitable. The Chernobyl nuclear accident happened. (made)

→ ........................................................................

4. Fossil fuels such as coal or oil are burned. Acidgases are produced. (so)

→ ........................................................................

5. Acid rain is dangerous. Trees' leaves are damaged. (because of)

→ ........................................................................

6. Leaves are damaged. The tree cannot get enough food energy to stay healthy. (because)

→ ............................................................................

Rewrite the following sentences, using the words in brackets.

1. The noise from the music club is loud, so the residents of the street cannot sleep. (because of )

→....................................................................

2. Vy had a stomachache because she ate a big dinner. (since)

→ ......................................................................

3. Because it rained heavily, the road in front of my house was flooded. (due to)

→ ...........................................................................

4. His room is untidy, so his mother is unhappy. (because)

→ .............................................................................

5. Global warming happens when there is too much carbon dioxide (CO₂) in the atmosphere. (cause)

→ ................................................................................

Rewrite the following sentences so that their meaning stays the same, using the words:

1. There was a loud noise next to my door last night, so I couldn't sleep.

→ Because..................................................

2. Tornadoes can move objects as big as a car.

→ Objects.......................................................

3. Your parents are happy because you behave yourself well.

→ If...................................................................

4. They provided food then cleared up the debris.

→ After...............................................................

5. I don't have free time, so I can't go some where.

→ If I...................................................................

6. I don't know the answer, so I can't tell you.

→ If.....................................................................

7. They will do the test well. They will review them all hard.

→ If.......................................................................

8. The rescue workers evacuated the villagers in the raged flood to the safe place last night.

→ The villagers in the raged flood............................

9. The students will provide aids for the homeless people tomorrow.

→ Aids.........................................................................

10. The people will protect the environment now. The environment will be nicer.

→ If..............................................................................

11. They don't have a map, so they got lost

→ If..............................................................................

12. The storm destroyed many houses in this village last week.

→ Many houses............................................................

13. Someone has stolen by bicycle.

→ My bicycle...............................................................

14. If he doesn't work hard, he will not pass his exam.

→ Unless...................................................................

Give the correct form of the following words:

1. If we (recycle)_____ more, we will help the Earth.

2. Factories (not dump)_____ waste into rivers if the government fines them heavily.

3. If people travel to work by bus, there (be)_____ fewer car fumes.

4. We (save)_____ thousands of trees if we don't waste paper.

5. If we use water carefully, more people (have)_____ fresh water.

6. If the factory (continue)_____ dumping poison into the lake, all the fish and other aquatic animals will die.

7. If we recycle more, we (help)_____ the Earth.

8. If people (travel)_____ to work by bus, there will be fewer car fumes.

9. We save thousands of trees if we (not waste)_____ paper.

10. Factories won't dump waste into rivers if the government (fine)_____ them heavily.

11. If he (study)_____ harder, he can pass an exam.

12. She may be late if she (not hurry)_____.

13. If you study harder, you (pass)_____ the exam.

14. If you are kind to me, I (be)_____ good to you.

15. If he (give)_____ up smoking, as his doctor orders, he will ber soon well again.

16. You (not pass)_____ your driving test unless you drive more carefully.

17. He'll be ill if he (not stop)_____ worrying so much.

18. We'll go to the beach tomorrow if it (be)_____ nice.

19. I (watch)_____ a science fiction film on TV at 9.00 tonight.

20. Look at those clouds - I think it (rain)_____

21. We'll need (call)_____ him more often

22. This time next week, I (lie)_____ on the beach on Phu Quoc Island

23. By the time I (arrive)_____ the airport, my husband (wait)_____ for me for an hour.

24. If the strees (be not)_____ watered daily, they will die.

25. Many houses (destroy)_____ in the hurricane last night in Nghe An.

26. If the students reviewed all lessons, they (do)_____ the test well.

27. After the thief (leave)_____ the house, the police (come)_____

28. He (not go)_____ out last night, he (stay)_____ at home.

29. That room (paint)_____ at this time next week.

30. By the time the police (come)_____, the thief (leave)_____

31. After I (finish)_____ the lesson, Lan went out.

32. This house (build)_____ in 2015.

33. Most people (leave)_____ before the volcano erupted.

Choose the best answer.

1. The heavy rain has caused _____ in many parts of the country.

A. storms B. floods C. drought D. heat

2. I like _____ back my home village on hpliday.

A. comes B. come C. came D. coming

3. Water _____ in the lake has made the fish die.

A. pollution B. pollute C. polluted D. polluting

4. If the factory continuse dumping poison_____ the lake, the fish and other animals will die

A. into B. to C. about D. in

5. The famous Sydney Opera House _____ as an arts center since 1973.

A. serves B. served C. have served D. has served

6. If you _____ the president, what would you do to help the environment?

A. would be B. are C. had been D. were

7. Mai: Linh has won the first prize. - Ha: _____!

A. That's awesome B. Oh dear C. How terrible D. That's shocking

8. Do you know that the telephone, the TV and penicillin are Scottish____.

A. inventors B. inventor C. inventions D. invention

9. Noise pollution can lead to _____ loss.

A. looking B. hearing C. listening D. reading

10. When she comes home later today, he _____ the dinner.

A. cooks B. is cooking C. will be cooking D. will be cooked

11. I hope you _____ when I arrive at 8p.m today!

A. didn't work B. won't be working C. don't work D. are working

12. What _____ in the year 2020?

A. am I doing B. will I be doing C. do I do D. does I do

13. Which TV programme_____ at 9p.m tomorrow?

A. did you watch B. will you watch C. will you be watching D. are you watching

14. _____ your laptop this evening? May I borrow it to do my project homework?

A. Do you use B. Will you be using C. Were you using D. Will you use

15. I intended _____ to New York next month.

A. flew B. to fly C. fly D. flying

16. I prefer _____ a nine-to-five job to working shifts.

A. did B. doing C. do D. does

17. She said she chose _____ for one year before entering university.

A. to work B. worked C. working D. works