The number of foreign students attending Chinese universities __________ risi...

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问题 The number of foreign students attending Chinese universities __________ rising steadily in the past ten years.

选项 A.was
B.were
C.has been
D.have been

答案C

解析根据“in the past lo years”确定此处为完成时;“tile number of…”作主语时谓语动词用单数,故选C。
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