I.⇒
5.Unless you leave on 15th , you will get home late for your mother's party.
6.If Tom's father does not tell him what to do, he never does anything.
7.Unless you really want it, do not take this job.
8.Unless she does something to prepare for the test, she will get bad marks.
9 If you do not get a visa, you can't visit the United States.
10.If you don't remember our address, you can find it in the phone book.
11.You can't run fast if you don't try your best.
12.If Tom were not out, you could see him at home.
13.If the weather were not nice, the boy wouldn't go swimming .
14.If everything had not been tidy , I wouldn't have felt pleasant.
15.If the noise had not been turned off, we could have slept well.
16.If people hear you coming to my office, they will phone me.
17.If you did not live in the dormitory, you could annoy me.
19.If the student does not go to school early, he will be punished.
20.If Minh did not love working with computers, he would get rid of his job.
21.If my sister does not come home early, she could waited for her.
22.If my mother was here, I would ask for some money
