Choose A, B, C, D for each gap in the following sentences

Choose A, B, C, D for each gap in the following sentences.
21.Great Britain ________of England, Scotland and Wales

A. is made up          B. makes up                            D. is making up           D.  are made up

22. Seven of ten people prefer face-to-face_____ when having a date.

A. language            B. contact                                 C. code                      D. sign

23. When thermal pollution happens, the water temperature in streams, rivers, lakes and oceans______

A. changes               B. keeps                                  C. remains                   D. stays

24. Australia is home to _______animals like kangaroos and koalas.

A. only                     B. rare                                     C. unique                     D. precious

25. If you were the president, what ________you do to help the environment?

A. will                      B. did                                      C. would                     D. do

26.The Maori in New Zealand greet each other by________ their noses.

A. touching              B. punching                             C. blowing                  D. rubbing

<!--[if gte vml 1]> <!--[endif]-->27. The village’s drinking water ______with poisonous chemicals since the factory came into operation.

A. contaminates       B. is contaminated                  C. has contaminated   D. has been contaminated

28. When the policeman came to the scene, the driver of the car _________

A. have left              B. had left                               C. leaves                     D. was left