The decorations were so lovely that they in a short time.
A. sold out
B. has been sold out
C. were sold out
D. were selling out
网友回答
A. sold out
B. has been sold out
(答案→)C. were sold out
D. were selling out
解析：考查时态和语态。句意：这些装饰品是如此地可爱，以至于他们很快就被卖完了。根据句意说明应该使用被动语态，根据前半句的were说明应该是一般过去时的被动语态，故C正确。