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Complete the sentences. Use the verbs in the present simple or with 'll/will or won't
1. If SIT in front of the television every evening, you 'll get bored. (sit/get)
2. Ifpeople only ............ fast food, they ................. healthy. (eat/not be)
3. If you .............. any breakfast, you ................. hungry before lunch. (not have/be)
4. If you ................ your brain, it ............... lazy. (not use/ get)
5. If Liza .............. her homework soon, she ............ it tonight. (not start/not finish)
6. If Jack .............. by train, he ............... in London in three hours.(go/be)
7. If you ................. an umbrella, you ............... wet.(not take/get)
8. If we ............... the environment, we ..............a home. (destroy/not have)