When deeply absorbed in work，________he often was，he would forget all about eating or sleeping.
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A
that
B
which
C
where
D
when
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—Where did you see your friend?—It was in the super market ____ I was doing shopping.
#76274
A
where
B
which
C
that
D
when
Miami and Oklahoma City, both of ______were the last two undefeated teams in the NBA this season, lost for the first time on January 3rd.
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A
whom
B
them
C
which
D
those
The president of the World Bank says he has a passion for China, ______ he remembers starting as early as his childhood.
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A
where
B
when
C
what
D
which
Last week, I bought an interesting story book, _____ is very beautiful.
#76153
A
which cover.
B
the cover of which.
C
its cover.
D
the cover of whose.