I

1 was used

2 was discovered

3 was widened

4 was finished

5 is situated

6 was built

7 visited

8 was completed

9 was formed

10 was opened

II

1 Exercises if often done by him every night.

2 The room is usually decorated by he at weekends.

3 Country songs are always sung by Daisy

4 Sweets are always given to her sister by her

5 These tress are often watered by Nam and Peter.

6 Car was produced in this country.

7 Smoking isn't allowed in this restaurant.

8 Is the room cleaned by pupils yesterday?

9 The wheel was invented thousands of years ago.

10 A statue of Chu Van An was built a long time ago.

Bài I :

1 - was used

2 - is discovered

3 - was widened

4 - was finished

5 - is being situated

6 - was built

7 - were visited

8 - was completed

9 - was formed

10 - was opened

Bài II :

1 - Exercises are done by him every night

2 - The rooms are decorated by her at weekends

3 - Country songs are sung by Daisy

4 - Her sister is given sweets by her

5 - These trees are watered by Nam and Peter

6 - Cars were produced in this country

7 - Smoking isn't allowed in this restaurant

8 - Is the room cleaned by pupils every day ?

9 - The wheel was invented thousands of years ago

10 - A statue of Chu Van An was built a long time ago