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.