Cho △ABC cân tại A. Tia phân giác ∠B và ∠C cắt AC và AB lần lượt ở D và E

a. CMR : DE//BC

b. Tính độ dài AB biết DE = 10cm ; BC = 16cm

1. Susan felt sick because she ate 4 cream cakes. If Susan.............................................................................

2.My suit needs to be cleaned before interview. I must.................................................................................

3."You stole my best cassette. Amanda",said William. William accussed.....................................................

4.Recause of the rough sea, the ferry could'n sail. The tough sea..................................................................

5.Roses can't possibly grow in such poor ground. It's impossible.................................................................

6.Your car might break down on the fough mountain road, so take plenty of spare parts.

→ In case.......................................................................................................................................................

7." You damages my bicycle,John" said Margaret. Margaret accused.........................................................

8.It is one hundred years since the birth of D.H Lawrece,the famous journalist

→D.H.Lawrece.............................................................................................................................................

9.John Speke failed to find the source of the River Nile. John Speke didn't succeed..................................

10.This furniture is so old that it's not worth keeping. This is.....................................................................

11.Handicapped people find shopping in supermarket difficult. It's..........................................................

12.Why don't you meet to discuss to pay offer? I suggest.........................................................................

13.Without this streatment, the patient would have died. If the patient.....................................................

14.Although he didn't speak Dutch, Bob decided to settle in Amsterdam. In spite of..............................

15.He is said to have been in the the French Foreighn legion. Peole say..................................................

16.I'm sure it wasn't Mrs.Elton you saw because she's in Bristol. It can't................................................

17.How long have Catherine and Henry been angeged. When.................................................................

18.In spite of his age,Mr.Benson runs 7 miles before breakfast. Although...............................................

19.The bread is sao stalethat we can't eat it. The bread isn't.....................................................................

20.Who does this bag belong to? Whose...................................................................................................

21.Never borrow money from friend's my father said. My father told......................................................

22. The accident happened because the train-driver ignored a warming light.

→ If the train-driver..................................................................................................................................

1.He didn't hurry, so he missed the train. If.............................................................................

2.I haven't seen that men here before. It's................................................................................

3.The furniture was so expensive that I didn't buy it. The furniture was too........................

4. He learned to drive when he was eighteen. He was............................................................

5. He has never been so unhappy before. He was unhappier..................................................

6. " I don't think John will come" said Bill. Bill doubted.......................................................

7. I don't suppose you have change for a pound, do you? Do you happen.............................

8. He failed to win the race. He didn't....................................................................................

9. She asked John how he liked her nwe dress. I wish.........................................................

10. A train leaves at eight o'clock every morning. There is.................................................

11. Nobody can deny that she had a beautiful voice. It.......................................................

12.I would like to help me to put the chair away. Do you mind..........................................

13.You must see the manager tomorrow morning. You're...................................................

14.There was never any answer when we rang. Every........................................................

15.John asked if it was the blue one or the green she wanted. Which................................

16. She likes Paris very little, and Rome less. She thought Rome.....................................

17. I can meet you meet you arrive before eleven. So.......................................................

18.They will catch all the prisoner agian to by tonight. Al the prisoners..........................

19.I've warned you not to go near that dog. I've warned you about.................................

20.No, please don't tell him. I'd rather..............................................................................

21.An up-to date visa is necessary for Andorra. You'll....................................................

22." Why didn't I get a computer before?"Thought the office manager.

→ The office manager wondered....................................................................................

23." You'd better not lend him any more money, Elizabeth" said John.

→ John advised Elizabeth..............................................................................................

Viết lại câu:

1.I'm always nervuos when I travel by air. The car.......................................................................................................................

2."Why don't you put your luggage under the seat?" He asked. He suggested.............................................................................

3.Althuogh he had good salary, he was unhappy in his job. In spite of........................................................................................

4.I advised you to put your money in the bank. It is such............................................................................................................

5.John only understood very little of what the teacher said. John could hardly...........................................................................

6.Unless someone has a key, we can't get into the house. We can only get..................................................................................

7.I'm sure you didn't lock the front of door. Here's the key. You can't.......................................................................................

8.He prefers golf to tennis. He'd rather......................................................................................................................................

9.He's sorry now that he didn't invite. Molly to his party. He wishes.......................................................................................

10.Bring your swimming things in case it's sunny. He told.......................................................................................................

11. I haven't been to Britolfro 3 years. The last time.................................................................................................................

12.No one has signed this cheque. This cheque.........................................................................................................................

13.Jim will be 18 next week. It's Jim's.......................................................................................................................................

14.Unless he phone immediately, he won't get any infromation. If...........................................................................................

15.How long is it since they bought the house. When...............................................................................................................

16.He couldn't repair the broken vase. The................................................................................................................................