42.1:

2, is made

3, was damaged

4, weren’t invited

5, are shown

6, is held

7, was written; was translated

8, were overtaken

9, is surrounded

43.2:

2, When was the television invented?

3, How are mountains formed?

4, When was antibiotics discovered?

5, What is silver used for?

43.3:

3, covers

4, is covered

5, are closed

6, was sent; arrived

7, sank; was rescued

8, died; were brought up

9, grew up

10, was stolen

11, disappeared

12, did Sue resign

13, was Ben fired

14, is owned

15, called; was injured; wasn’t needed

16, were these pictures taken; Did you take

17, am not bothered

42.4:

2, All flights were cancelled because of fog.

3, This road isn’t used much.

4, I was accused of stealing money.

5, How are languages learnt by people?

6, We were warned not to go out alone.