1. If you ______ your best, you will be successful.
A. try B. will try C. tried D. would try
2. If there … more than 24 hours a day, I would have more time to sleep.
A. is B. will be C. were D. would be
3. If I were rich, I ______ a lot of books and clothes for poor children.
A. buy B. will buy C. bought D. would buy
4. If it is sunny tomorrow, we ______ on an ecotour.
A. go B. will go C. went D. would go
5. If she ______ younger, she would travel around the world.
A. is B. has been C. were D. be
6. You will become ill if you ______ working long hours every day.
A. keep B. will keep C. kept D. would keep
7. He would be disappointed if he ______ the truth.
A. knows B. will know C. knew D. would know
8. My grandmother ______ my uncle in Ho Chi Minh City if she were in better health.
A. visits B. will visit C. visited D. would visit
9. Many lives ______ saved if doctors find effective treatments for the disease.
A. are B. will be C. were D. would be
10. We would play soccer if it ______ not rainy today.
A. is B. was C. has been D. to be