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Some people have the idea_____ you can cross Canada in less than five days.
A. what B. that C. which D. when
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Only after her mother came to help her for the first few months ______ to begin her project.
A. did she allow B. had she allowed
C. was she allowed D. is she allowed
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Thanks to Dr Yuan’s research, the UN has more tools in the battle to rid the world _____ hunger.
A. of B. on C. off D. at
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______ is even more important is that the earth cooled down, water began to appear on its surface.
A. When B. That C. Which D. What
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Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.
A. had studied B. studied C. studies D. has studied
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It is so wet there _____ the trees are extremely tall, some measuring over 90 meters.
A. what B. which C. that D. why
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Many _______ of years later, the first extremely small plants began to appear on the surface of the water.
A. millions B. million C. million of D. millions of
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_______ Jane’s way of studying chimps, our group are all going to visit them in the forest.
A. Follow B. Following C. Followed D. To follow
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Jane warns us that our group is going to be very tired and dirty by the afternoon and she is right. However, the evening makes it all ______.
A. favorable B. worthwhile C. precious D essential
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Many of them have ______ gift for riding wild horse and can win thousands of dollars in prize.
A. / B. an C. a D. the
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