A. interact
B. understand
C. volunteer
D. contribute
A. maintain
B. perform
C. prefer
D. offer
A. cleaned
B. looked
C. climbed
D. enjoyed
A. lake
B. play
C. shape
D. many
A. denied
B. discussed
C. protected
D. admitted
A. slow
B. determined
C. hesitant
D. reliant
A. poor
B. clear
C. quick
D. vague
A. got emotional
B. became furious
C. remained calm
D. felt anxious
A. is
B. be
C. are
D. was
A. have graduated
B. will graduate
C. will have graduated
D. am going to graduate
A. leaving
B. to leave
C. that leave
D. leaves
A. success
B. succeed
C. successful
D. successfully
A. will
B. won’t
C. would
D. wouldn’t
A. an
B. a
C. the
D. x
A. Because
B. Although
C. Despite
D. Because of
A. Did dinosaurs become extinct
B. Why dinosaurs having become extinct
C. Dinosaurs became extinct
D. Why dinosaurs became extinct
A. gratify
B. please
C. ingratiate
D. commend
A. on
B. at
C. in
D. of
A. set
B. took
C. got
D. put
A. ups and downs
B. odds and ends
C. wear and tear
D. white lie
A. tape
B. wood
C. pepper
D. letter
A. should
B. shouldn’t
C. would
D. could
A. Great, I’d love to.
B. Oh, I’m afraid so.
C. You’re welcome.
D. Wow! You didn’t realize that
A. I don’t think that’s a good idea
B. I totally disagree
C. You’re right
D. Never mind
A. which
B. where
C. who
D. what
A. awareness
B. attention
C. attraction
D. willingness
A. Whenever
B. In addition
C. Therefore
D. However
A. elder
B. middle
C. younger
D. youngest
A. create
B. creation
C. creative
D. creature
A. The Domination of the Land
B. Dinosaurs and their extinction
C. Earth’s Largest Reptiles
D. The History of Earth
A. dinosaurs
B. millions
C. lizards
D. whales
A. 200 million years
B. 135 million years
C. 80 million years
D. 65 million years
A. very hot
B. extremely cold
C. very cold
D. humid
A. It made them the largest creatures ever on earth.
B. It varied quite greatly.
C. It guaranteed their survival.
D. It was rather uniform.
A. Revolution in communication
B. The invention of optical fibers
C. New surgical techniques
D. The roles of optical fibers in medicine
A. has enabled scientists to make amazing discoveries
B. sometimes requires a surgical incision
C. allows doctors to see inside the body without major surgery
D. has been unknown to the general public until quite recently
A. previously
B. completely
C. usually
D. theoretically
A. optical fibers
B. pathways
C. physicians
D. other areas of the body
A. To carry light into the body.
B. To collect and focus light.
C. To reconstruct images.
D. To perform surgery inside the body.
A. They use brighter light.
B. They are longer.
C. They contain more fibers.
D. They are larger in diameter.
A. They can be performed in a physician's office.
B. They are safer than conventional surgery.
C. They can often be performed without anesthesia.
D. They are relatively easy to teach to physicians.
A. who
B. were
C. in
D. now
A. plows
B. the fields
C. the seeds
D. will harvest
A. do a profit
B. the
C. at least
D. a month
A. My friend is better at English than me.
B. My friend is the best at English person in my class.
C. I am the best at English person in my class.
D. I am better at English than my friend.
A. The son said that he was going away the next day, mom.
B. The son told his mom that he was going away the next day.
C. The son asked his mom if he was going away tomorrow.
D. The son said his mom he was going away the next day.
A. Sally needn't have paid for her travel in advance.
B. Sally might not have paid for her travel in advance.
C. Sally may not have paid for her travel in advance.
D. Sally couldn’t have paid for her travel in advance.
A. Jenifer regrets not having rejected the job offer.
B. If only Jenifer didn’t reject the job offer.
C. Jenifer wishes she hadn’t rejected the job offer.
D. Jenifer regrets to reject the job offer.
A. So soft is the voice of the master of ceremonies that everyone listens to her attentively whenever she appears on the stage.
B. As long as the master of ceremonies hadn’t had a very soft voice, everyone wouldn’t listen to her attentively whenever she appears on the stage.
C. Only after everyone listens to the master of ceremonies attentively whenever she appears on the stage does she have a very soft voice.
D. But for a very soft voice, everyone would listen to her attentively whenever she appears on the stage.
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