When the policeman came there, the robber

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12. When the policeman came there, the robber
A. had left
B. has left
C. left
D. was left
13. All people who were without homes in the flood were provided with ..
accommodation.
A. short
14. Seven of ten people prefer face-to-face . when having a date.
A. language
15. When thermal pollution happens, the water temperature in streams, rivers,
lakes and oceans .
A. changes
B. temporary
C. present
D. instant
B. contact
C. code
D. sign
B. keeps
C. remains
D. stays
16. Australia is home to ... animals like kangaroos and koalas.
A. only
17. If you were the president, what ... you do to help the environment?
A. will
18.The Maori in New Zealand greet each other by .. their noses.
A. touching
19. The village's drinking water . with poisonous chemicals since the factory
came into operation.
B. rare
C. unique
D. precious
B. did
C. would
D. do
B. punching
C. blowing
D. rubbing
A. contaminates
B. is contaminated
C. has contaminated
D. has been contaminated