一的英文問題!!!20分

~Unless...(1-5)/...unless...(6-10)

1.If you don’t take an umbrella, you'll get wet.
2.He will fail his exam if he doesn't study.
3.They won't let you in if you don't wear a tie.
4.If it doesn't rain this August, there will be water shortages.
5.In the old days people never travelled if they didn't really have to.
6.If Mr. Jones doesn't come to visit us, we won't have a party.
7.If you don't use high quality material, you can't build a good house.
8.You'll lose your friends if you don't keep your promise.
9.You won't get a scholarship if you don't study hard.
10.Martha cannot go to the movie if she doesn't finish her homework.

~If...
Read the situation and write a sentence with 'if' (use type 3=If...(s.past)...,...would/could+(inf)...)

1.She does not eat anything because she is not hungry.
2.The accident happens because the drive in front stops suddenly.
3.I do not wake George because I do not know he wants to get up early.
4.I am able to buy the car because Jim lends me the money.
5.She is not injured in the crash because she is wearing a seat belt.
6.You are hungry now because you did not have breakfast.
7.She doesn't buy the coat because she doesn't have enough money on hear.
8.The Americans dropped the bomb because the weather was ideal.
9.People die because they come out of the shelters.
10.People don't go back into the shelters because the sirens don't go off.
11.Many people are killed because the atomic bomb is a very destructive weapon.
12.Many people get dreadful burns and become blind because the blast is terribly strong.