The number of foreign students attending Chinese universities _____ rising steadily since 1990.   
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A
is
B
are
C
has been
D
have been
推荐题目
The student told me that he _______ the exam _______.
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A
has had; yesterday
B
had; the day before yesterday
C
had had; the day before
D
had had; yesterday
Hearing his words, she left rather than _________ behind.
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A
stay
B
stayed
C
to stay
D
staying