1. The grass (to get) wet when it (to rain).2. If you (to heat) ice, it (to melt).3. If you (to mix) green and blue, you (not to get) purple.4. If public transport (to be) efficient, people (to stop) using their cars.5. If people (to eat) too much, they (to get) fat.6. People (to die) if they (not to eat).7. You (to get) water if you (to mix) hydrogen and oxygen.8. Snakes (to bite) if they (to be) scared9. If babies (to be) hungry, they (to cry).

это предложение и есть в present simple

on the whole - в целом, вообщем

in many ways - во многих отношениях, многими путями (типа достичь чего-то, решить что-то)

1.i see the plane in the sky.

2. a lot of factories polute our atmosphere.

3. sun is the biggest star in our galaxy.

4. people went to the moon in the 20th century.

1. is your house had break?

2. is he your best friend?

3.  is here had an old castle?

4.  is this castle visited by tourists?

5.  when to you has said the truth?

6.  who has painted a picture ''the sunflower''?

7.  is a space examining by astronauts?

8.  what to them has still offered?

9. is thief has arrest by this police officer?

10.  is a window maybe be open?

11. is this work can be done?

12.  is this writer writing a new book?

13. is he known, as a talented musician?

14. why they wear a funny clothes?

15. which language used in thailand?

16.  is a medical treatment for a cancer can be opened?

17. is he has won?

18.  is climate changing?

19.  why the public needs to be warned about it?

20. is this brilliant the biggest in the world?

21.  do you like, when shout on you or talked about you?