问题补充：
The computer game well and out very soon.
A. sells, is sold
B. sells, sells
C. is sold, sells
D. is sold, is sold
答案：
(答案→)A. sells, is sold
B. sells, sells
C. is sold, sells
D. is sold, is sold
解析：句意：这个电脑游戏卖的很好，并且很快就卖完了。Sell可用作及物动词和不及物动词。其主语一般是指人，但是在表示某物卖得不错时，要用主动语态。结合语境可知前文用主动语态，下文指的是被卖完了，故用被动语态。选A。
