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【題目】Taking exercise is the key ______ your health.
A. to improve B. to improving
C. in improving D. of improving
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【題目】Scientists study ____ human brains work to make computers.
A.when
B.how
C.that
D.whether
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【題目】Many people were t under the ruins when the landslide(山體滑坡) happened in Shenzhen.
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【題目】In our class there are 46 students, ______ half wear glasses.
A.in whom
B.in them
C.of whom
D.of them
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【題目】If you happen to get lost in the wild, you'd better stay ______ you are and wait for help.
A.why
B.where
C.who
D.what
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【題目】Convenient ______ plastic bags are for people, they will cause white pollution.
A. as B. although
C. since D. while
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【題目】Only after the incident happened was I conscious ______ his unfriendliness.
A. with B. for
C. of D. at
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