Rewrite the following sentences
1.He works hard and he will pass the exam
-> If he
2.He didn't pass the exam because he didn't work hard
-> If
3. We can avoid waiting by booking the tickets in advance
-> If
4.She didn't hurry, so she missed the train
->Were
5.They wanted to buy the house, but they hadn't have enough money
-> If
6.We must go now or we'll be late
->If
7.He was planning to go to the teacher training college but his father died
-> If
8.They didn't follow the map,so they got lost
->If
9.I'm having a lot of troubles now because I lost my passport last week
->If
10.If you don't watch the programme,you can't really guide
->Unless