sell是原形表示被动,不能选
下列动词的主动语态表示被动意义:lock ( 锁 ) ; wash ( 洗 ); sell ( 卖 ); read ( 读 ); wear ( 穿 ); blame (责备)；ride (乘坐)； write ( 写 )；let (出租)等.如：
I was to blame for the accident.那件事故我应该承担责任.
Glass breaks easily.玻璃容易破碎.
The car rides smoothly.这车走起来很稳.
The case locks easily.这箱子很好锁.
The book sells well.这本书很畅销.