The flowers were so lovely that they in no time.
A. sold
B. had been sold
C. were sold
D. would sell
网友回答
A. sold
B. had been sold
(答案→)C. were sold
D. would sell
解析：考查动词的时态语态。根据前面的过去式谓语were可知，后面也要用一般过去时; 再根据“花”与“卖”的关系可知，此处要用被动语态，句意：这些花是如此可爱以至于很快就被卖光了，选C。