EX 3:(Trang 2)

1.If I had known you were in hospital, I would have visited you.

2.If you don't hurry up, you will be late.

3.If she were free (hoặc 1 từ nào đó mang nghĩa rảnh), she would help me.

4.If he had known my phone number, he would have phoned me.

5.If you took exercise, you would be fit.

6.If you are careless, you will cut yourself with that knife

7.Unless I have time, I can't help you.

8.If he had studied very carefully, he wouldn't have got bad marks.

9.If Dick drove more carefully, he wouldn't have caused accidents.

10.If I knew English, I could apply for that job.

Chúc bn học tốt ^^

exercise 2

1/ crop time past, and preparing some nosh to eat is a certain result of the circumstance

2/ sweet potato is a prime example for the case  

3/ sweet potato, cassava, and peanuts

4/ yes