1. She is lazy, so she can't pass the exam.
-> If it ..................................................................................................................................................
2. He smokes too much; that's why he can't get rid of his cough.
--> If .......................................................................................................................................................
3. Olga and Ivan weren't paying attention, so they didn't see the sign marking their exit from the highway.
--> If .......................................................................................................................................................
4. We put off our trip because the weather was terrible.
--> But for ..............................................................................................................................................
5. Sally doesn't know what she has to do for homework because she was absent from school on Friday.
-> If ......................................................................................................................................................
6. Martin failed his driving test last week because he was very nervous.
--> But for...................................................................................................................................
7. His father is sad now because he failed the examination again.
--> If he …………………………………………………………………..…………………………..
8. They had a terrible accident because they were too careless.
--> But for ……………….…………………………………………………………………………...
9. We could accuse him of having stolen our car because we had evidence.
--> Without …………………………………………………………………………….............….
10. I don’t know many people. I am lonely.
--> Were …………………………………………………………………………………………..
11. I hope it will rain soon. Otherwise, we will lack of water.
--> If it ……………………………………………………………………………………………...
12. She can't be employed because she doesn't have a college degree.
--> Were …………………………………………………..……………………………………….
13. Because of the attractive salary, I didn’t give up the job
--> Had it………………………………………………….………………………………………….
14. The heavy rain prevented us from getting there.
--> Without ……………………………………………..…………………………………………...
15. Fortunately, she arrived in time to save the boy.
--> If she ……………………………………….…………………………………………….......….
16. You had better have this car serviced .
--> If I …………………………………………………………………………………………….....
17. Give me the money or I will kill her.
--> Should …………………………………………………………………….………………………
Đáp án B
Câu ban đầu: Anh ta hút thuốc quá nhiều, có thể đó là lí do tại sao anh ta không thể thoát khỏi bệnh ho của mình.
Đáp án A sai cấu trúc câu điều kiện loại 2. Loại A.
Đáp án C và D sai nghĩa so với câu ban đầu nên cũng loại.