Part 3:

1, putting

2, feel

3, hasn’t been painted

4, would buy

5, will be built

6, was lying

7, unhealthy

8, Environmentalists

Part 4:

1, be -> to be

2, for -> since

Part 5:

1, Auld Lang Syne is sung on New Year’s Eve.

2, In spite of the heavy rain, we went on a picnic.

3, The novel I bought tells about wild animals.

4, The man asked me which grade I was in.

Part 3:

1.were/could go

2.were having

3.haven't received

4.stay

5.is being built

6.carelessly

7.informative

Part 4.

1.fluent->fluently

2.flew->would fly

Part 5:

1.Peter wishes he didn't live far from school.

2.The man talking to the lady over there is my new boss.

3.The benefits of the Internet can't be dinied.

4.The postman asked me if I lived there.