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
that
B
what
C
when
D
at which
推荐题目
We should consider the students’ request_____ the school library provide more books on popular science.
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A
when
B
which
C
that
D
where
As a child, Jack studied in a village school, ______ is named after his grandfather.
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A
that
B
where
C
what
D
which
The book, ____ are true stories about great scientists of the 20th century, is well worth reading.
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A
which
B
what
C
in which
D
of which