Answer:
1. If i meet Ms.Oanh tomorrow, I will give her this letter.
C. will give
2. If you speak English well, you will communicate with foreigners.
C. speak
3. If Tony had known her telephone number, he would have rung her.
B. would have rung
4. I would have visited my grandparents if I hadn’t been busy with my homework.
B. hadn’t been
5. If Mr.Fuho told the truth, the police wouldn’t arrest him.
B. told
7. If I were Amee, I would accept this job.
D. would accept
8. If Ms.Oanh wouldn’t agree to go on the trip, would you have gone?
D. wouldn’t agree
9. If you don’t keep silent, you will wake the baby up.
A. will
10. The bus won’t stop unless Mr. Bean rings the bell.
D. unless
11. LIsa will be pleased if she passes her driving test.
C. if
12. If had Huy driven more carefully , the accident would not have happened yesterday.
A. If Huy drives more carefully