1.When we came, they were repairing the roof of the house.

- When we came, the roof ......................................................................

3.She was wearing her new T-shirt when I met her yesterday.

...........................................................................................................

4. Ann was writing a letter.

...........................................................................................................

5. The chief engineer was instructing all the workers of the plan.

...........................................................................................................

1.She is using the computer at the moment.

- The computer .......................................................................................

3. They are building some new houses down the street.

- Some new houses .................................................................................

4. Alex is preparing that report.

- That report ...........................................................................................

5. Is Mrs. Brown painting your house?

- Is your house .......................................................................................

6. They are building a market near the hospital.

- A market ................................................................................

5. We don't raise cows on our farm.

- Cows ....................................................................................................

6. Japan makes a lot of cars.

- Cars.......................................................................................................