I. Multiple Choice: Choose the correct answer A, B, C, or D (10 questions)
1. If you heat water to 100 degrees Celsius, it ________.
A. boils B. boiled C. will boil D. would boil
2. If the weather is fine tomorrow, we ________ on a picnic in the countryside.
A. went B. will go C. would go D. had gone
3. If I ________ enough money right now, I would buy a new smartphone.
A. have B. will have C. had D. had had
4. If they had trained harder last month, they ________ the match easily.
A. win B. will win C. would win D. would have won
5. If you press this red button, the machine ________ working immediately.
A. starts B. started C. will start D. would start
6. If Nam ________ so much time on video games, he would have better grades.
A. doesn't spend B. didn't spend C. won't spend D. hadn't spent
7. If I had slept earlier last night, I ________ so tired right now.
A. am not B. won't be C. wouldn't be D. wouldn't have been
8. If she ________ the train yesterday morning, she would have arrived on time.
A. caught B. catches C. had caught D. would catch
9. If people drink clean water every day, they ________ healthier.
A. stay B. stayed C. will stay D. would stay
10. If we lived in a traditional stilt house, we ________ ethnic culture better.
A. experience B. will experience C. would experience D. experienced
II. Verb Conjugation: Complete the sentences with the correct verb forms (10 questions)
11. If you (mix) ____________________ blue and yellow, you get green.
12. If it (rain) ____________________ tomorrow, we will cancel the outdoor festival.

13. If I (be) ____________________ you, I would spend more time doing physical exercise.
14. If they (start) ____________________ earlier yesterday, they wouldn't have missed the bus.
15. If I had taken the medicine yesterday, I (feel) ____________________ much better today.
16. If she (pass) ____________________ the entrance exam next week, her parents will be very proud.
17. If my brother had more free time, he (join) ____________________ a sports club.
18. If we (know) ____________________ your address last week, we would have visited you.
19. If you touch a hot pan, you (get) ____________________ burned.
20. If I (have) ____________________ a bicycle, I would ride it to school every day.
III. Sentence Rewriting: Rewrite the following sentences using IF (10 questions)
21. You heat water to 100 degrees Celsius and it boils.
-> If __________________________________________________________________________________
22. Work hard and you will pass the final examination.
-> If __________________________________________________________________________________
23. I don't have enough money, so I can't buy that expensive laptop.
-> If __________________________________________________________________________________
24. She didn't study hard, so she failed the history test yesterday.
-> If __________________________________________________________________________________
25. Peter ate too much fast food last night, so he feels sick today.
-> If __________________________________________________________________________________
26. Eat too much junk food and you gain weight quickly.
-> If __________________________________________________________________________________
27. Hurry up or you will miss the school bus.
-> If __________________________________________________________________________________
28. Hoa doesn't practice speaking English, so she isn't confident.
-> If __________________________________________________________________________________
29. Peter didn't set his alarm clock last night, so he woke up late this morning.
-> If __________________________________________________________________________________
30. They didn't bring an umbrella yesterday, so they got wet in the rain.
-> If __________________________________________________________________________________