EXERCISE IV: Put ''if'' or ''unless'' into these spaces

EXERCISE IV: Put ''if'' or ''unless'' into these spaces.
1/................... we hurry, we'll miss the bus
2/ Will you phone me......................... you come to England.
3/....................you see Jane, ask her to contact me.
4/You'll never pass your exam.....................you don't work harder.
5/Liverpool won't win............................they begin playing better.
6/.......................you forget our address, you can find it in the phone book
7/You won't pass your driving test........................you drive more carefully.
8/He'll be ill.........................he doesn't stop worrying so much.
9/We'll go to the beach tomrrow............................it's raining.
10/We'll never get there on time.........................the train leaves soon.