问题补充：
--- What do you think of this kind of TV set, which in Shanghai?
--- Well, I don’t care about such things.
A. was made
B. is made
C. has been made
D. had been made
答案：
A. was made
(答案→)B. is made
C. has been made
D. had been made
解析：说明一件事实，用一般现在时的被动。
