II. Underline the best answers. ( Gạch chân đáp án chính xác nhất)
1. If you have left/ left home before I get there, I will/ would meet you at the airport.
2. How will/ would your father react if you leave/ left school?
3. If you will go/ go to England next month, you will/ must drive on the left.
4. Were/ Was I your doctor, I'd insist that you stop smoking.
5. You may/ might be sorry if you spend/ spent all your money.
6. Will/ Can I use your computer, if I am/ were careful?
7. Will/ Would people be able to fly if they have/ had feathers instead of hair?
8. If anyone should/ might call, would you please take a message?
9. If your mother is/ were here, I'm sure she won't/ wouldn't let you eat all those chocolates.
10. Were they not/ Weren't they rich, they couldn't have gone to the USA for their holiday.