8. Everyone must take part in …………… deforestation.

A prevent                   B preventing                        C to prevent                  D prevented
 

17. If you live in this small town , you earn much money.

A didn’t                B can’t                                   Ccouldn’t                     D aren’t

  18. If you have …………..money , you can travel abroad this summer.

A a lots                  B lot of                                   C many                        D a lot of

  19. If you are a student, you can get a discount ……………… books.

A for                    B at                                          C in                             D on

  20. I won’t go unless you ……….. me money back.

A pay                   B paying                                   C paid                         D to pay

  21 Can you  turn…………… the light? It’s too dark.

A for                   B off                                         C in                              D on

  22. What are you looking ……………..? My picture book. I’ve lost it.

A for                    B in                                          C off                           D on

  23 There are ………..saving methods and inventions to use solar energy.

A energetics         B energy                                 C energize                     D energetic

  24. I had to pay much money this month for the international………………

A call                  B called                                 C calling                           D calls

  25. A new air-conditioner will be……………. this morning.

A install              B installing                             C installed                        D to install

  26. Scientists are looking for an……………..way to reduce energy consumption.

A effect              B effecctive                           C effectively                    D effection

  27. We can …………..easily in the day light.

A reading             B read                                 C reading                        D to read

  28. she won’t take all the suitcases…………… she likes to travel light.

A therefore           B because                          C but                               D so

  29 They are completely short of water now. A number of people have died because of this …………..

A short                  B shortly                          C shorten                          D shortage

  30. What can we do to spend less……………… lighting?

A of                     B about                               C on                               D in