I. supply the correct form of the words in brackets to complete the sentence
1. the streets are busy and noisy in the city . ( noise)
2. My mother is a teacher of English ( teach ) (?)
3. Nam likes football and volleyball . he is so sporty ( sport)
4. The air in the area is polluted with smoke from factories (pollute)
II. rewrite the sentence
1. The dog is in front of the microwave
-> the microwave is behind the dog.
2. My school has twenty classes .
-> there are twenty classes in my school.
3. It is essential that you do your homework before going to school .
-> you must do your homework before going to school.
4 The black car is more expensive than the red car
-> the red car is cheaper than the black one.