A. share
B. age
C. safe
D. place
A. chatted
B. surprised
C. downloaded
D. started
A. food
B. took
C. book
D. push
A. surname
B. sure
C. surplus
D. surface
A. dusty
B. custom
C. super
D. muscle
A. admire
B. access
C. beyond
D. compose
A. depletion
B. productive
C. instrument
D. especially
A. dominate
B. substantial
C. agriculture
D. national
A. persistent
B. dynamic
C. sensitive
D. ambitious
A. vaccine
B. machine
C. cuisine
D. routine
A. world-famous
B. hand-made
C. time-consuming
D. ready-made
A. respectable
B. ignorant
C. special
D. outstanding
A. I think you're right.
B. People are using renewable energy.
C. Don't worry.
D. That's very kind of you, but actually…
A. What do you think about that?
B. You're wrong about that.
C. When will people use less energy?
D. That would be a great idea.
A. has already become extinct
B. is likely to be categorized as "threatened species"
C. may become endangered in the near future
D. was placed on the ESA list
A. sensitive
B. friendly
C. powerful
D. self-motivated
A. The polar bear’s natural habitat
B. The polar bear as an endangered species
C. The polar bear and global warming
D. The polar bear’s foreseeable future
A. heating homes
B. burning garbage
C. driving cars
D. hunt for fish
A. Ice has been extremely polluted.
B. Air temperature has become unbearably colder.
C. Sea ice has been greatly reduced.
D. The number of fish has rapidly disappeared.
A. It’s months since I last saw him.
B. It’s months when I last saw him.
C. It’s months before I last saw him.
D. It’s months after I last saw him.
A. I have a good time abroad.
B. I had good time abroad.
C. I had had a good time abroad.
D. I have had a good time abroad.
A. He lived here three years ago.
B. He has lived here for three years.
C. He had been living here for three years.
D. He had lived here three years ago.
A. It’s ages since I last saw him.
B. It’s ages when I last saw him.
C. It’s ages before I last saw him.
D. It’s ages after I last saw him.
A. By the time you finish dinner, the film will have ended.
B. By the time you have finished dinner, the film will end.
C. You finish dinner, and then the film will end.
D. By the time you finishing dinner, the film will have ended.
A. prepares
B. must prepare
C. prepare
D. will prepare
A. get
B. take
C. use
D. make
A. had spoken
B. will speak
C. spoke
D. speak
A. this
B. whom
C. that
D. which
A. pollute
B. pollution
C. pollutants
D. polluter
A. mustn't she
B. hasn't she
C. has she
D. must she
A. Having irritated
B. Irritating
C. Having been irritated
D. Irritated
A. more important
B. the most important
C. most important
D. much important
A. Hardly had I sat
B. Scarcely had I sat
C. No sooner had I sat
D. Barely had I sat
A. for
B. to
C. on
D. about
A. finishes
B. finished
C. will finish
D. finishing
A. his intelligence
B. of he was intelligent
C. of his intelligence
D. he was intelligent
A. fast-growing
B. thought-provoking
C. up-to-date
D. short-term
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