дам 30- Put the verbs in brackets into the correct tense.
1. i wish i(be) more careful.I wouldn't have hurt myself.
2.i wish i(have) a lighter to start a campfire.
3.i wish the weather(not/to be) so hot.
4.if only Mike(not leave) the compass at home. We wouldn't be lost now.
5.if only we(bring) sleeping bags. We wouldn't be cold at night

Complete the sentences with the correct

form of the verbs in the box.

build have involve raise boost increase improve

1 When I want to my mood, I go running.

2 Did you know laughing can ___ your blood

5 Choose the correct words.

1 Perhaps some light exercise could / must relieve

the pain.

2 He fell asleep at his desk! He might / must have been exhausted.

3 Ann isn’t here. She must / can’t have forgotten.

4 You don’t have to / shouldn’t exercise when

you don’t feel well.

5 She’s walking to school. She might / can’t have missed the bus.

6 He can’t / could have gone home. He’s left his bag on the chair.

7 We mustn’t / don’t have to learn Chinese.

8 Tania’s in Spain. You must / could have seen

someone else.

Communication

pressure?

3 My dad doesn’t

the discipline to run a

marathon.

4 She’s very shy. I think she needs help to her

self-esteem.

5 Coffee doesn’t

gives a short boost.

6 Our new project

7 There are exercises you can do to your

concentration.

2 Write the nouns for these words.

your energy for very long. It

a lot of team work.

6

Complete the dialogue with the words in the box.

suppose have sure might should think

Kate Look at these adverts for the new sports hall, Nick.

Объяснение:

Alot of factories produce waste and is drained into rivers. so the water in the rivers becomes poisoned. the hole in the ozone layer is very dangerous to humans: ultraviolet radiation passes through them and reaches the ground. such radiation may cause dangerous diseases. the population of many countries is suffering from lack of water. nuclear weapons can produce terrible destruction on our planet. nuclear power plants are not so “clean” as some believe: they become the source of the contamination. the environment is everything you see around you. today people understand the need to keep it clean, if humanity wants to survive.