While studying, fix your mind on what is really important, or you will         remembering nothing.
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A
take up
B
lead to
C
stick to
D
end up
推荐题目
 It is known to us that lions and tigers ________ the cat family.
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A
are belonging to
B
belonged to
C
belong to
D
are belonged to
Jack, have you ____ your mid-term examination?
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A
finished
B
passed through
C
got through
D
succeeded to pass