I. Change sentences into the pasive ( present simple) :
1. Mr Hai delivers the letters everyday.
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2. The children often buy the tickets at the box office.
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3. They usually finish their homework before bed time.
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4. The teacher corrects our exercises today.
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5. We often watch the shows of music on TV.
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6. We do a written test today.
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7. Everyone always see the Picasso's exhibition.
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8. The workers clean the streets everyday.
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9. Careless driving causes many accidents.
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10. Weeds cover the river bank.
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