3.But for his sister's money,he wouldn't have continued to study
4.If you walk to the park,it will take you 5 minutes
5.If it rains,we’ll stay at home
6.If i were you,i would cut down on smoking right now
8.Should you arrive at the office earlier than i do, you can turn on the air-conditioner
9.If it weren't snowny,the children could go to school
10.Had he not died so young ,he would be a famous musician by now
11.Unless you tell me the whole truth,i won't help you
12.Were you to take good care of the care,it wouldn't break down so often
13.If he weren't very bad-tempered,his wife wouldn't have left him after marriage
14. If you tell lies to your boss,you'll be fired at once
15.Had she not got married ,she would be at university now
16.Were she spoke english well,she would apply for the job
17.If you hadn't stayed up late last night,you wouldn't tired now