A. happy
B. dirty
C. energy
D. supply
A. facsimile
B. transfer
C. fan
D. spacious
A. service
B. courteous
C. subscribe
D. candies
A. disappear
B. interfere
C. influence
D. introduce
A. endangerment
B. reasons
C. but
D. by
A. The number
B. are decreasing
C. that
D. in
A. he
B. novelists
C. served
D. during
A. in
B. up
C. of
D. with
A. whom
B. whose
C. who
D. that
A. about who I talked to you
B. who I talked to you
C. whom I talked to you about her
D. who I talked to you about
A. for
B. in
C. on
D. with
A. children whom
B. children
C. children who
D. whose children
A. variety
B. disappearance
C. danger
D. existence
A. exchange
B. influence
C. result
D. control
A. polluted
B. developed
C. preserved
D. destroyed
A. friends
B. mates
C. seasons
D. young cats
A. gradual
B. slow
C. quick
D. leisure
A. rude
B. polite
C. helpful
D. warm
A. different
B. differ
C. differently
D. difference
A. nationally
B. nation
C. national
D. nationality
A. from
B. in
C. to
D. on
A. although
B. because
C. and
D. so
A. going
B. goes
C. went
D. had gone
A. hunting too much
B. hunting overseas
C. hunting in the highlands
D. hunting for wildlife
A. animals attracted to medical researchers.
B. large animals kept in zoos.
C. endangered animals in Asia.
D. animals traders want to have
A. is a threat to farmers
B. has been reduced when forests are cut down
C. is rebuilt when people destroy forests
D. is near farms and industries
A. receives soil which betters the quality of water.
B. has its name from the color of its water.
C. is a deep river in China.
D. runs between forests.
A. the river is shallow due to the raised river-bed.
B. wood is deposited in rivers.
C. water from many streams flows into it.
D. of the low quality of the water.
A. pollution
B. pollutant
C. pollute
D. pollutants
A. destruction
B. destruct
C. destructive
D. destroying
A. transmitting
B. transmitter
C. transmission
D. transmits
A. am working
B. working
C. do working
D. are working
A. to be examined
B. to examine
C. to examined
D. is examined
A. has been playing
B. has played
C. plays
D. are playing
A. want
B. wants
C. wanting
D. wanted
A. Peter watched video film by night, he wouldn’t be asleep by day.
B. Peter didn’t watch video film by night, he wouldn’t be asleep by day.
C. Peter didn’t watch video film by night, he would be asleep by day.
D. Peter didn’t watch video film by night, he wouldn’t have been asleep by day.
A. If the meeting hadn’t been so long, they wouldn’t have felt tired.
B. If the meeting had so long, they would have felt tired.
C. If the meeting was so long, they wouldn’t have felt tired.
D. If the meeting hadn’t been so long, they wouldn’t feel tired.
A. Mr. Forest admitted making a mistake in the calculations.
B. Mr. Forest admitted having made a mistake in the calculations.
C. Mr. Forest admitted to having made a mistake in the calculations.
D. Mr. Forest admitted to have been made a mistake in the calculations.
A. I was introduced to a man who brother I had seen on TV the evening before.
B. I was introduced to a man which brother I had seen on TV the evening before.
C. I was introduced to a man that brother I had seen on TV the evening before.
D. I was introduced to a man whose brother I had seen on TV the evening before.
A. Gary Byrn with that you worked last year in PDT cooperation is the best co-worker I’ve met.
B. Gary Byrn with which you worked last year in PDT cooperation is the best co-worker I’ve met.
C. Gary Byrn with whom you worked last year in PDT cooperation is the best co-worker I’ve met.
D. Gary Byrn whom with you worked last year in PDT cooperation is the best co-worker I’ve met.
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