1. many, you, been, computer, how, years, have, playing, games?
2. washing, for, been, 30, washing-machine, the, has, minutes.
3. digital, homes, people, their, 14, devices, or, use, 10, in.
4. pollute, don’t, rivers!
5. influence, lives, waste, animals’, industrial.

How many computer games have you been playing?

The washing-mashine has been washing for 30 minutes

People use ih their homes 10 or 14 digital devices

Don't pollute, rivers!

Industrial waste influence animals' lifes

Объяснение:

1 he wasn't hungry, so he didn't eat dinner.

- if he had been hungry, he would have eaten dinner.

2 i didn't see ann, so i didn't tell her about the party.

- if i had seen ann, i would have told her about the party.

3 he was very tired last night so he stayed in.

- if he hadn't been very tired last night, he wouldn't have sttayed in.

4 she missed the bus because she left home late.

- she wouldn't have missed the bus if she hadn't left her home late.

5 they got wet because they didn't take an umbrella.

- they wouldn't have got wet if they had taken an umbralla.

6 we didn't take any photographs because we had left the   camera at home.

- we would have taken many photos if we hadn't left the camera at home.

7 she went to the party and met a lot of new people,

- if she hadn't gone to the party, she wouldn't have met any new people.

8 the weather was great so we went to the beach.

if the weather hadn't been great, we wouldn't go to the beach.