1. Chuyển câu sang Because of: Because the river is dirty, we can't swim there
A Because of the dirty river is polluted, we can't swim there.
B Because of the dirty river, we can't swim there.
C Because of the river dirtyly, we can't swim there.
D Because of the dirtyly river, we can't swim there.
2. Chuyển câu sang Because: The Internet is sometimes dangerous because of viruses 
A Because there are viruses, the Internet is sometimes dangerous.
B Because of viruses, the Internet is sometimes dangerous.
C Because the internet is somtimes dangerous, we can be affected by the viruses.
D Because the bad result of the viruses, the Internet sometimes is dangerous.
3. Nối câu sử dụng Because/ As/ Since: Lan didn't want to be late for school, so she hurried. (câu này có nhiều cách ghi) 
A Because Lan didn't want to be late for school, so she hurried.
B As Lan didn't want to be late for school, she hurried.
C Since Lan didn't want to be late for school, she hurried.
D Both B and C are correct.
4. Điền từ vào chỗ trống dựa theo công thức CÂU ĐIỀU KIỆN (loại 1): if Lan (do)_________ morning exercise regularly, she will be healthy
A If Lan does morning exercise regularly, she will be healthy.
B If Lan don't do morning exercise regularly, she will be healthy.
C Lan will be healthy if she does morning exercise regularly.
D Both A and C are correct.
5. Điền từ vào chỗ trống dựa theo công thức CÂU ĐIỀU KIỆN (loại 1): Mai (have) _________ good marks if she doesn't do her homework well
A Mai will not have good marks if she doesn't do her homework well.
B Mai doesn't have good marks if she doesn't do her homework well..
C Mai will have good marks if she doesn't do her homework well.
D Mai have good marks if she doesn't do her homework well.
6. Viết lại câu, sử dụng CÂU ĐIỀU KIỆN (loại 1): You join an English-speaking club. Your speaking skill will be improved soon. 
A If you join an English speaking club, your speaking skill will be improved soon.
B Your speaking skill will be improved soon if you join an English speaking club.
C If you joined an English speaking club, your speaking skill would have been improved soon.
D Both A and B are correct.
7. Choose the best answer: She has a _________ beautiful collection of butterflies
A real
B really
C reality
D realness
8. WORD FORM: You should end the letter ________ (polite)
A politeness
B impolite
C politely
D polite
9 Sắp xếp các từ sau thành 1 câu hoàn chỉnh: I'm/ that people/ this area/ dissapointed/ have spoiled

I'm dissapointed that people have spoiled this area.
10 Tìm lỗi sai: If Nam didn't do his homework, he will be punished.
A If
B didn't do
C homework
D will be punished

#NOCOPY

#No_copy

1 . B . Because of the dirty river, we can't swim there.

2 . A . Because there are viruses, the Internet is sometimes dangerous.

3 . D . both B and C are correct

4 . D . Both B and C are correct

5 . A Mai will not have good marks if she doesn't do her homework well.

6 . A If you join an English speaking club, your speaking skill will be improved soon.

7 . B . really

8 . C . politely

9 . I'm disappointed that people have spoiled this area

10 . B  didn't do ( Vì đây là câu điều kiện loại 1 )