Exercise 1: Put the verbs in the brackets in the correct tense
1. If I had a typewriter, I .........................(type) it myself.
2. If I .........................(know) his address, I'd give it to you.
3 .He .........................(look) a lot better if he shaved more often.
4. If you .........................(play) for lower stakes, you wouldn't lose so much.
5. If he worked more slowly, he .........................(not make) so many mistakes.
6. I shouldn't drink that wine if I .........................(be) you.
7. More tourists would come to this country if it .........................(have) a better
climate.
8. If I were sent to prison, you .........................(visit) me?
9. If someone .........................(give) you a helicopter, what would you do with
it?
10. I .........................(buy) shares in that company if I had some money.
Exercise 2: Using the given information, make conditional sentences with IF
1. They are poor, so they can’t help us.
→ If they ...................................................................................................
2. He doesn’t do his homework. He is always punished.
→ If he .....................................................................................................

3. He doesn’t have enough time. He can’t help me.
→ If he ......................................................................................................
4. She doesn’t take any exercise, so she is overweight.
→ If she ....................................................................................................
5. He doesn’t have a bicycle, so he always goes to class late.
→ He wouldn’t ...........................................................................................
6. I am bad at English, so I can’t do homework.
→ I could ...................................................................................................
7. He doesn’t practise speaking French, so he doesn’t speak it fluently.
→ If he .......................................................................................................
8. The meeting can be cancelled because it snows heavily.
→ If it .....................................................................................................
9. We don’t go because it will rain.
→ If it ........................................................................................................
10. John is fat because he eats so many chips.
→ If John ..................................................................................................

Exercise 1: Put the verbs in the brackets in the correct tense
1. If I had a typewriter, I .........................(type) it myself.
2. If I .........................(know) his address, I'd give it to you.
3 .He .........................(look) a lot better if he shaved more often.
4. If you .........................(play) for lower stakes, you wouldn't lose so much.
5. If he worked more slowly, he .........................(not make) so many mistakes.
6. I shouldn't drink that wine if I .........................(be) you.
7. More tourists would come to this country if it .........................(have) a better
climate.
8. If I were sent to prison, you .........................(visit) me?
9. If someone .........................(give) you a helicopter, what would you do with
it?
10. I .........................(buy) shares in that company if I had some money.
Exercise 2: Using the given information, make conditional sentences with IF
1. They are poor, so they can’t help us.
→ If they ...................................................................................................
2. He doesn’t do his homework. He is always punished.
→ If he .....................................................................................................

3. He doesn’t have enough time. He can’t help me.
→ If he ......................................................................................................
4. She doesn’t take any exercise, so she is overweight.
→ If she ....................................................................................................
5. He doesn’t have a bicycle, so he always goes to class late.
→ He wouldn’t ...........................................................................................
6. I am bad at English, so I can’t do homework.
→ I could ...................................................................................................
7. He doesn’t practise speaking French, so he doesn’t speak it fluently.
→ If he .......................................................................................................
8. The meeting can be cancelled because it snows heavily.
→ If it .....................................................................................................
9. We don’t go because it will rain.
→ If it ........................................................................................................
10. John is fat because he eats so many chips.
→ If John ..................................................................................................

i tập 18: Số dân và sản lượng lúa của nước ta giai đoạn 1990- 2005

Vẽ biểu đồ kết hợp thể hiện số dân và sản lượng lúa của nước ta . Nhận xét và giải thích sự thay đổi đó.

Câu 13. Ở vịt 2n=80. Cho rằng nhóm tế bào sinh dục đang giảm phân có tổng số NST đơn cồng
kép bằng 8000, trong đó NST kép nhiều hơn đơn 1600.
Số NST ở kì giữa, kì sau lần phân bào I và kì đầu của lần phân bào II tương ứng với tỉ lệ " giữa I:
sau I: đầu II = 1:2:3.
Số NST còn lại ở kì sau lần phân bào II.
a, Xác định số tế bào ở mỗi kì nói trên.
b, Xác định tổng số tế bào được tạo thành qua quá trình giảm phân và tổng số NST của chúng.

I. Error identification & correct (xác định và sửa lỗi sai)
Example: It’s difficult getting there on time in rush hour.
getting → to get
1. He does his homework at the moment.
2. He is learning cooking at the moment.
3. What do you usually do at your free time?
4. You should practise speak English before you go to England.
5. She is very good of writing essays.
6. I am really not interested of going to high school.
7. He thanks her about inviting him to the party.
8. They don’t go to the swimming pool because the rain.
9. They don’t go to the swimming pool because the rain.
10. Would you like going to a pop concert this weekend.
II. Complete the sentences with​​ although/ in spite of/ because/ because of.
1.​​ ............​​ ​​ the meeting's at 2.00, I won't be able to see you.
2.​​ ............​​ I told the absolute truth, no one would believe me.
3. The goods were never delivered............​​ ​​ the promise we had received.
4. My mother is always complaining................ the untidiness of my room.
5. I didn't get the job............​​ I had all the necessary qualifications.
6. It's unsafe to travel in that country​​ ............​​ the ongoing civil war.
7. The villagers refused to leave.................. the drought.
8.​​ ............​​ ​​ everything looked different, I had no idea where to go.
9. ............... his age, John was not hired ...................he had the necessary
qualifications.
10. You can't enter this secure area​​ ............​​ you don't have an official permit.