1.People don't trust him because he tells lies.

->If he.........didn't tell lies, people would trust him................................

2.She is so busy that she can't come to the party

->If she ........weren't so busy, she could come to the party............................

3.I haven't got the money , so I'm not going on holiday.

->If I.....had got the money, I would be going on holiday.....................

4.He often gets bad marks because he is lazy

->If ........he weren't lazy, he wouldn't often get bad marks.......................................

5.Do it now,or you will not finish it on time

->If........you don't do it now, you won't finish it on time....................

6.Hurry up,or we will ba->be late for the exam

->If......we don't hurry up, we will be late for the exam.................................

7.Be quiet ,or you will not understand the lesson

->If........you aren't quiet, you won't understand the lesson........................

8.I'm not a doctor , so I can't help you

->If......I were a doctor, I could help you....................

9.They do not understand you because you do not often talk to them

->If.........you often talked to them, they would understand you....................