I. Put the verbs in brackets into the correct form to complete the sentences.
6. Many people (be) ________ out of work if the local factory closed down.
7. If the sun (shine) ________ , we will walk to the mountain.
8. If people (stop) ________ digging the street, there wouldn’t be noise pollution in this area.
9. People use a lot of cars and motorcycles. If people (reduce) ________ the use of motor vehicles, there (be) ________ less serious air pollution.
10. If you (not read) ________ these articles, you (not know) ________ the facts about water pollution.
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