Exercise: Kết hợp câu dùng câu điều kiện.
1. He can't go out because he has to study for his exam.
--> If...
2. She is lazy so she can't pass the exam.
--> If...
3. He smokes too much; that's why he can't get rid of his cough.
--> If...
4. I can't play fooball this aftemoon because I felt tired.
--> If...
5. You always complain about everything that happens in your life, that's why I never want to work in a team with you.
--> If...
6. She can't be employed because she doesn't have a college degree.
--> If...
7. She walked to the meeting. She was late.
--> If...
8. Unless you promise to retum back, I won't lend you.
--> If...
9. He put off our trip because the weather was terrible.
--> If...
10. Sally doesn't know what she has to do for homework because she was absent from school on Friday.
--> If...
