1. They did the exercises well.
2. She must wash this dress in cold water.
3. He hasn't made any mistakes in his composition.
4. They will exhibit his painting for the first time by New Arts gallery.
5. They built this house 100 years ago.
6. They make these artificial from silk.
7. The students are writing the lessons now.
8. We have to do this job at once.
9. They feed these animals twice a day at the zoo.
10. French doctors are going to perform the operation.
11. They have made all the arrangements.
12. When did they manufacture this radio?
13. We couldn't find them anywhere.
14. Is she teach mathematics in this school?

1. They did these exercise well.

2. They must wash this dress in cold water.

3. He hasn't made any mistakes in his composition.

4. New Arts gallery will exhibit his painting for the first time.

5. They built this house 100 years old.

6. They made this artificial of silk.

7. The students are writing the lessons now.

8. They have to do this job at once.

9. They feed these animals twice a day at the zoo.

10. French doctors is going to perform the operation.

11. They have made all the arrangements.

12. When did they manufacture this radio?

13. He couldn't find them anywhere.

14. Do they teach mathematics in this school?