Peter asked if he could borrow Janet's typewrite
The office manager wondered why he/she hadn't gotten a computer before

I , 6c nha

I
1d
2b
3d
4a
5c
6a
7a
8d
9a
10d
II
1a
2c
3b
4a
5c
6d
7c
8b
9b
10b
11c
12d
13d
14a
15c
III
1, were ,were
2,did
3, did
4, was
5 did , were
6, did 
7, was
8, was
IV
1, I visited my grandparents last weekend
2, In the morning, we went on a picnic
3, Did she watch cartoon on TV last night?
4, What did you do at the funfair

có AB²+AC²=4,5²+6²=56,25=7,5²
tam giác abc vuông tại a
=>      AH.BC=AB.AC
          AH.7,5=4,5.6
          AH.7,5=27
          AH= 3,6

Hải: Nếu hai bạn chạy quãng đường dài như nhau, bạn nào chạy ít thời gian hơn thì bạn ấy chạy nhanh hơn.

4b
6b
7a
 

18b

1.   My sister got married last month. (to get)

2.   I have just decided to start working next week. (to decide)

3.   Daisy came to her grandparents’ house 3 days ago. (to come)

4.   He has been at his computer for seven hours. (to be)

5.   My computer was broken yesterday. (to be)

6.   He bought me a big teddy bear on my birthday last week. (to buy)

7.   My friend (to give) gave me a bar of chocolate when I (to be) was at school yesterday.

9.   My children didn't dotheir homework last night. (not to do)

10.   Have you lived here five years ago? (to live)

11.  They watched TV late at night yesterday. (to watch)

14.  I did my Maths homework yesterday. (to do)

15.  Does Susan go to England by plane? (to go)

16.  They visited a farm two weeks ago. (to visit)

18.  The children didn't were at home last weekend. (not/to be)

22.  Did you phone your aunt last week? (to phone)

23.  He doesn't drink milk at school. (not/to drink)

29. Have you done your homework yet?  (you /to do)

– Yes, I finished it an hour ago. (to finish)

1,had
2,walk
3,went
4, have been
5, did Ba do
6, didn't see
7, was
8,lived
9,knew
10,would come

1, was
2, marries
3,lives
11, goes
13,finds