问题描述：
As the curtain ____ ,the famous singer came out.The fans ____ and screamed with excitement .
A. was raised,rose
B. had been raised,were raised
C. rose,were raised
D. had risen,raised
选哪个?为什么?rise和raise有什么区别?
A. was raised,rose
B. had been raised,were raised
C. rose,were raised
D. had risen,raised
选哪个?为什么?rise和raise有什么区别?
问题解答：
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