When deeply absorbed in work, _____ he often was, he would forget all about eating or sleeping.
#78649
A
that
B
which
C
where
D
when
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I’m sorry not to have replied to your letter earlier, ______, I must say , I apologize.
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A
which
B
for which
C
to which
D
whom
Advertising can influence consumers' moods，_____ in turn，can influence consumers’reactions to products．
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A
that
B
which
C
where
D
when
They can find whatever they need in the supermarket, ______ is always busy on Sundays.
#78638
A
which
B
when
C
where
D
who
In the past few years, My Heart Will Go On was a popular song among young people, ____ were often heard singing it at parties．
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A
they
B
that
C
who
D
which