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100
  • The environmental group hopes ______ the forest to its original condition by the end of the decade.
    A. to restore
    B. having restored
    C. to be restored
    D. to have been restored

A. to restore

100
  • The primary digestive function of the throat and esophagus is _____ swallowed the material from the mouth to the stomach.
  • A. to transport
    B. for transportation 
  • C. for transporting
    D. the transportation

A. to transport

100
  • ______ a new language can be very interesting.
    A. Learn
    B. Learned
    C. Learning
    D. To learning

C. Learning

100
  • At New Year’s Eve ______ continued until early in the morning.
    A. to sing and to dancing
    B. they sing and dance
    C. singing and dancing
    D. song and dance

C. singing and dancing

200
  • The new employees are furious ______ the news about their delaying salary.
    A. receiving
    B. received
    C. to receive
    D. receive

C. to receive

200
  • We decided to stay home because Sita wasn’t very keen on ______ out in the rain.
    A. go
    B. goes
    C. went
    D. going

D. going

200
  • Henry Ford revolutionized production management by _____ into small steps on a moving line.
    A. breaking down auto assembly
    B. broken down auto assembly
    C. he broke down auto assembly
    D. auto assembly breaking down

A. breaking down auto assembly

200
  • After attending the wedding party, Dona planned______ the meal and had dinner with her family.
    A. heating
    B. to heat
    C. heat
    D. heats

B. to heat

300
  • Forgetting something usually mean an inability to retrieve the material that is still stored somewhere in the memory.

means

300
  • Since lightning was probably significant in the formation of life, understanding it might help us to understanding life itself.

to understand

300
  • According to some educators, the goal of teaching is to help the students learn what they need  knowing to live a well-adjusted and successful life.

to know

300
  • Geologists at Hawaiian Volcano Observatory rely on a number of instruments to studying the volcanoes in Hawaii.

to study

400
  • A mortgage enables a person to buy poverty without paying for it outright; thus more people are able to enjoy owning a house.

to own

400
  • During the 1870s iron workers in Alabama proved they could produce iron by burns iron with coke rather than with charcoal.

burning

400
  • The knee is more likely being damaged than most other joints in the body because it cannot twist without injury.

to be

400
  • The ability of the writers recording observations made by others enables them to include in their work a great deal of material outside their own experience.

to record

500
  • In the 1970s, consumer activities succeed in promote laws that set safety standards for automobiles, children’s clothing and wide range of household products.

promoting

500
  • In human beings, hairs around the eyes and ears in the nose prevent dust, insects, and other matter from entered these organs.

entering