A) Many trees are cut without being replaced. b) We should turn the lights when we leave the room. c) We have to find solutions for these problems. We can’t give . d) We have to save our planet now. We are running time. e) Environmentalists have to deal some insensitive politicians.

1 When did you enter a university?
2 it is not or problem. It is yours.
3 Do not disturb. He is writing an important letter.
4 He is composing a song. The song is about love.
5 Who knows German best of all here?
6 when she saw blood she had got frightened.
7 We have four pets: a cat and three dogs.
8 The contracts have already been checked and analyzed.
9 How is your friend? He is well.
10 has she woken up early to reach the university on time?
11 The essay was written by a son.
12 In this cafe is usually served without sugar.
13 does he expect us to do that without any support?
14 The man appeared from the door and looked at us.
15 Where are Tom's things?
16 We live in a big cottage.
17 Turn off the water.
18 M. Jackson sang many hits.
19 What are the constitution parts of the Russian Federation?
20 When we entered our brothers were playing.
21 If I see him , I will ask on his matter.
22 We thought the book would be more interesting.
23 All teenagers enjoy computer games.
24 Must I wake up so early?
25 I could read all night long if the book was interesting.