He came from New York, ________ made him different from the other students in the class.
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I will never forget the days ________ we spent our holidays together.
A. when
B. which
This is the reason _________ he was dismissed.
A. why
B. that
Last summer I visited the People’s Great Hall, in __________ many important meetings are held every year.
A. which
B. that
China is a country ______ has a long history.
A. which
B. where
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