I can never forget the days _____ we worked together and the days ______ we spent happily together.
#77023
A
when; which
B
which; when
C
for which; that
D
on which; when
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He went to Paris the next year, ______ he lived and was never back.
#78018
A
where
B
when
C
which
D
that
— Where did you find the professor who made the speech yesterday?— It was in the hall_______ the students often have a meeting.
#76142
A
where
B
which
C
that
D
when
There is a system ________the waste is disposed of using the principles of ecology.
#76233
A
which
B
where
C
that
D
at which