21. In the face of widespread concern about environmental waste, compact disc manufacturers are attempting to find a replacement for the disposable plastic box in which they package their product.
(A) the disposable plastic box in which they
(B) the disposable plastic box where they
(C) a disposable plastic box in which to
(D) disposable plastic boxes inside which they(A)
(E) the disposable plastic boxes in which to
偶想问两个问题:1、plastic box 在这里用单数是否因为后面的product用了单数,所以意义要对等?2、偶看了以前的一个贴,dansy回复的,说inside which 不对,偶想问inside which 和in which在这题的区别,谢谢。 |