问题描述：
关于sell的主动和被动的区别
These books _____well.
A.sells B.are being sold C.are sold D.sell
到底选哪个?A还是C?
These books _____well.
A.sells B.are being sold C.are sold D.sell
到底选哪个?A还是C?
问题解答：
我来补答展开全文阅读