1.
1. The wheel was invented thousands of years ago.
2. Is a statue of Chu Van An going to be built?
3. Is the Temple of Literature surrounded by four busy streets?
4. Pencils will not be provided at the test, so please bring your own
5. We haven't been taught by Mr. Binh since the last semester.
6. That experiment is being done by a student teacher.
7. Was this dictionary bought two weeks ago?
8. I am not impressed by Alan's knowledge about science and technology.
9. A new school is going to be built here next year.
10. This computer has been used for two years.

2.

1. I have painted a mural over graffiti before.
2. Mr. Binh has recycled rubbish two years ago.
3. Because David was lazy, he failed the exam
4. It's five months since they last cleaned up the street.
5. We began to donate books and clothes ten years ago.

Chúc bạn học tốt!