1. Although Nam and I have quite different characters, we are close friend.

2. My grandmother used to tell us folktales when we were small.

3. Lan got good marks because she had worked hard in the final exam.

4. Alexamder graham bell was born in edinburgh, scotland in nineteenth century.

5. My father is at home before seven because he wants to watch the 7 o'clock news.

6. That is very kind of you to help me with this math problem.

7. We raise funds by collecting waste paper and broken glass.

8. What were you doing when i called the phone ?

9. This work has to be finished before five o'clock.

10. If she is not invited to the birthday party, I will not go.

1. Kaly can play the piano when he was two and now he practises it every day .

=> could

2. With addition to the bad service, the cost of the accommodation is too high.

=> In

3. Jane arrived at her school by a new car .

=> in

4. I'll speak with you about your last vacation .

=> to

5. I've to write a letter. Can you borrow me some paper & an envelope ?

=> lend

goi so can tim la ab 

ta co ab.7=a0b

=> 7.(10a+b)= 100a+b

=> 70a +7b=100a+b

=> 30a=6b

=> 6a=b

vi a;b la cac so co 1 chu so 

=> a=1;b=6

vay so can tim la 16

5. I have little time so I don't surf the Internet much.
=> If I had more time, I would surf the Internet much (more).

6. I last saw my sister when I was in New York.
=> I haven’t seen my sister since I was in New York.
7. I’ll be very happy when I go on holiday.
=> I am very much happy to go on holiday.
8. There was never any answer when we rang.
=> Every time we rang, there wasn't any answer.
9. They are going to build a new school here.
=> A new school is going to be build here.

1.she has bought that bike four years ago

=> bought

2.on summer the weather is often hot

=> In
3. that a an interested

=> interest
4.This is film gooder than that book

=> better
5 They lived here for six years

=> have lived
6. she enjoy to walk in the rain

=> enjoys walking
7.We listen to music now

=> are listening
8.Would you mind to open the door

=> opening
9. I haven't visted her since a long time

=> for
10. Julia is keen on collect stamps

=> collecting

A đó bạn!

Vì sao nói ô nhiễm môi trường chủ yếu do hoại động của con người gây ra? Nêu những biện pháp hạn chế ô nhiễm.

x= \(1\frac{2}{5}\)

Tuổi anh là:(26+8)/2=17(tuổi)

Tuổi em là:17-8=9(tuổi)