$\text{29.}$ stopped

$\text{30.}$ did you do

VII.

$\text{1.}$ If he weren't often absent from class, he could keep pace with her classmates.

$\text{2.}$ If you had done as I advised you, you wouldn't have failed.

$\text{3.}$ If you aren't careful, you will make a wrong decision.

$\text{4.}$ If he had believed in his talent, he wouldn't have decided to leave.

$\text{5.}$ If today weren't very cold, we could go swimming.

$\text{6.}$ If I had attended the lecture, I could have done the test.

$\text{7.}$ If I brough up enough money, I would give back the book.

$\text{8.}$ If you make noise, you will wake up the baby.

$\text{9.}$ If you don't stop talking, you won't understand the lesson.

$\text{10.}$ Had we not got up late, we wouldn't have missed the bus.

$\text{11.}$ Unless you invite her, I'm sure she won't come.

$\text{12.}$ If I had had enough time, I could have got a higher mark.

$\text{13.}$ If she had worn the raincoat, she wouldn't have got a cold.

$\text{14.}$ If John hadn't caught the rain yesterday, he wouldn't have been ill today.

$\text{15.}$ Unless you want to lose your job, you must work harder.

$\text{16.}$ Unless you go away, I will phone the police.