919.It is said that the early European playing cards ____ for entertainment and education.
A.were being designed
B.have designed
C.have been designed
D.were designed
920.This machine _______.It hasn't worked for years.
A.didn't work
B.wasn't working
C.doesn't work
D.isn't working
919.答案是D;
此句句意:据说早期欧洲的扑克牌是为娱乐和教育的目的而设计的。很明显应用一般过去时。
920.答案是C;
根据下文的时态得知,这台机器已经多年不转了,故用一般现在时,表示现在的状况。