A lot of language learning ,_______has been discovered, is happening in the first year of life, so parents should talk much to their children during that period .
#75815
A
as
B
it
C
which
D
this
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—The boys hid themselves in the places ________ they couldn’t be found.—How naughty(淘气的) they are!
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that
B
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D
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Care of the soul is a gradual process ______ even the small details of life should be considered.
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B
in what
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The freezing point is the temperature __________ water changes into ice.
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A
atwhich
B
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C
inwhich
D
ofwhich