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99. Use the words in brackets to complete the sentences. Use the Present Simple or the Future Simple.

1. If he ....................(be) late, he ...................(miss) the train. 2.If he .......................(miss) the train, he .......................(have) to take a bus. 3. If he ....................(take) a bus, he ......................(arrive) at 9.30. 4. If he ....................(arrive) at 9.30, he ..................(meet) our teacher. 5. If he ................(meet) our teacher, she ......................(ask) him about the party. 6. If she .....................(ask) him about it, he ....................(tell) her the truth. 7. If he .......................(tell) her the truth, she ....................(know) everything. 8. If she .................................(know) everything, she ......................(be) angry. 9. If she ..............................(be) angry, she ....................(give) us a lot of work to do. 10. If she ..........................(give) us a lot of work to do, I ......................(be) very busy.