Hấp thụ 6,72L CO₂( ĐKTC) và 200ml đặc điểm KOH 1M và NaOH xM .sau phản ứng xảy ra hoàn toàn làm khô thu được 32,8g chất rắn khan .giả sử trong quá trình làm khô dd không xảy ra các phản ứng hoá học. tính x

em suy nghĩ như thế nào khi ở cấp trung học cơ sở được học về sinh sản, các cơ quan sinh dục nam, nữ

em sẽ làm gì để tránh thai ở tuổi vị thành niên

BÀI TẬP ÔN TẬP ANH 8

I. Rewrite

1. We started living here fifteen years ago

-> We have ……………………………………

2. The last time she visited me was five month ago

-> She hasn't …………………………………………

3. I last wrote to my uncle in July

-> I haven't ………………………………………….

4. It's long time since we became close friends

-> We have ……………………………………

5. Tan began to collect stamps in 1999

-> Tan has …………………………….

6. We began to study English four years ago

-> We have ……………………………………

7. Nga started to keep this dog seven days ago

-> Nga has ………………………………………

8. I haven't read this novel yet

-> I never ………………………………………

9. They have lived here for 10 years

-> They began ……………………………………

10. An hasn't received the letters from her close friends since January

-> An last ……………………………………………………………..

II.Turn these sentences into passive voice

1. My brother always invent telephones

-> ………………………………………………………………………

2. Lan often do the chores on sundays

-> ………………………………………………………………………

3. They cook the meal themselves

-> ………………………………………………………………………

4. Tan usually buy fish and vegetables for her mother

-> ………………………………………………………………………

5. We don't use the saucepan and frying pan

-> ………………………………………………………………………

6. Do you call Aunt Hoa every night?

-> ………………………………………………………………………

7. Does your mother put the rug between the armchair and the couch?

-> ………………………………………………………………………

8. The mother doesn't let children play in the kitchen

-> ………………………………………………………………………

9. Children do not play with matches

-> ………………………………………………………………………

10. My younger sister always empty the garbage in early morning

-> ………………………………………………………………………

11. Hung cleans the fish tank every afternoon

-> ………………………………………………………………………

12. Does our teacher do the experiment this afternoon?

-> ………………………………………………………………………

13. The repairmen often fix the washing machine

-> ………………………………………………………………………

14. Do these boys draw that picture?

-> ………………………………………………………………………

15. The old woman doesn't light the lamp in the evening

-> ………………………………………………………………………

III. Choose the best answer

1. My mother showed me how ( to make/ making/ make/ made) clothes

2. These houses ( are built/ built/ were built/ build) 90 years ago

3. Our teacher asked us ( whether if/ if/ what/ if whether) we liked to go camping

4. My family has decided ( visit/ visited/ to visit/ visits) Ha long in the Summer

5. When passing the bridge, we often stop ( take/ took/ taking/ to take) pictures

6. My friend told me what ( doing/ to do/ do/ done) when I visit Hoi An

7. When the teacher comes in , the class stop ( talking/ to talk/ talk/ talked) and stand up

8. I always remember ( turn/ turning/ to turn/ turned) off the light before going to bed

9. Life in the city is different ( with/ of/ from/ to) life in the country

10. I prefer tea ( rather/ than/ more/ to) coffee