4. If your English is good, they will accept you.

5. if they don't open the door, the room will be very dark.

6. If you don't spend too much money on shopping, you will save a lot of money.

7. If we don't pollute the river, we will have water to use.

8. If you try to study, I will show you how to write a book

9. If she doesn't hurry, she will be late for school.

10. If you don't take the medicine, your health will be worse.

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mình không rõ đề là gì nên đã thử điền liên từ nhưng co vẻ không phù hợp nên mình đã làm thành câu điều kiện

4. Your English is good but they accept you.

5. They don't open the door although the room is very dark.

6. You don't spend too much money on shopping because you save a lot of money.

7. We pollute the river , so we don't have water to use.

8.  I show you how to write a book , so You try to study.

9. She doesn't hurry, although she late for school.

10. Your heath is worse, but you don't take the medicine.