After visiting China, most of the foreign friends said they would never forget the time _________they had spent in China.
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A
what
B
that
C
when
D
at which
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Evdence has been found through years of study children’s early sleeping problem are likely to continue when they grow up.
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A
why
B
how
C
whether
D
that
He told me the news______, believe it or not, he had earned $1 000 in a single day.
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A
that
B
which
C
as
D
because
Guess what! I came across my primary school science teacher this morning, ______ I have lost touch for almost 20 years.
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A
of which
B
when
C
with whom
D
who
There is no possibility, I guess, _____our exam will be put off.
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A
what
B
which
C
that
D
whether