People believe writing poems provides a ______ through which they can express their feelings.
A.shelter
B.source
C.Channel
D.background
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Paul did a great job in the speech contest. He ______ many times last week.
A.need have practised
B.might practise
C.must have practised
D.could practise
The course normally attracts about 100 students per year, ______ up to half will be from abroad.
A.Who
B.of which
C.When
D.of whom
Mary’s description of the party was so vivid that I felt as if I_______there.
A.would be
B.might have been
C.would have been
D.had been
Whether to favor urban development or the preservation of historical sites is especially controversial in China, where there exists rich history, diversified tradition and cultural ________.
A.surplus
B.deposits
C.accounts
D.receipts