A + 1 . 2 + 2 . 3 = \(\frac{30.31.32}{3}=9920\)

=> A = 9920 - (1 . 2 + 2 . 3)  = 9920 - 8 = 9912

helpful

b, I prefer the city to the country.

c, I prefer outdoor activities to indoor activities.

d, I prefer the hot weather to the cold weather.

e, I prefer pop music to traditional music.

f, I prefer computer to books.

+ 4 câu ở thì quá khứ đơn

1. I was at home yesterday.

2. I went to Ha Noi 3 years ago.

3. What did he do last night?

4. She bought a comic book lastweek.

+ 3 câu ở thì hiện tại

1. I am a student.

2. I often play badminton on Sunday.

3. He often goes swimming in the afternoon.

+ 3 câu ở thì tương lai

1. I will go to HCM City next month.

2. I won't go out this Sunday.

3. I will go to school tomorrow.

Chất X bằng một phản ứng tạo ra C₂H₅OH và từ C₂H₅OH bằng một phản ứng tạo ra chất X. Trong các chất C₂H₂, C₂H₄, C₂H₅COOCH₃, CH₃CHO, CH₃COOH, CH₃COOC₂H₅, C₂H₅ONa, C₆H₁₂O₆ (glucozơ), C₂H₅Cl. Số chất phù hợp với X là

A. 4   

B. 3   

C. 6   

D. 5

recycle bins

Rewrite the sentences using "used to":

1. He doesn't love me any more.

=> He used to love me.

2) They ofter went to school by bike when they were young.

=> They often used to go to school by bike when they were young.

3) I no longer eat meat.

=> I used to eat meat.

4) When Lan was small, she used to cry a lot.

=> Lan used to cry a lot when she was small.

5) My father used to drive to work when he lived in Japan.

=> My father used to drive to work when he lived in Japan.

6) We had a nice garden once, but now we don't any more.

=> We used to have a nice garden.

7) David used to have long hair.

=> David used to have long hair.

8) Her mother usually got up early.

=> Her mother usually used to get up early.

9) He often ate lots of ham.

=> He often used to eat lots of ham.

10) We lived in the country in 1980s but now we live in Ho Chi Minh City.

=> We used to live in the country in 1980s.

1. Tom and Mary want two glasses of water.

2. Mrs Lan is going to buy some apples and oranges for her children.

My sister is going to live in the country.