求解大全366里的使动用法 NNplease! thx

1.        In an effort to reduce their inventories, Italian vintners have cut prices; their wines have been priced to sell, and they are.

(A) have been priced to sell, and they are

(B) are priced to sell, and they have

(C) are priced to sell, and they do  省略了SELL they指代wines, sell物作主句，不及物
                     使动用法说

(D) are being priced to sell, and have（C）

(E) had been priced to sell, and they have

og给的解释里提到了： in do sell, do is a conjugated form and sell is in the infinitive form

没有这个语法点的知识，请NN帮我补下

自己顶下

这个知识点还是想弄懂 防范偏题 因为此题也找不到更好的突破口

刚刚翻了朗文字典，还是不明白什么叫a conjugated form

大全解释是：

to conjugate: to inflect (a verb) in its forms for distinctions such as number, person, voice, mood, and tense.

这是什么语法现象，长这么大没见过？？？？？？？？？

to conjugate: to inflect (a verb) in its forms for distinctions such as number, person, voice, mood, and tense.

这是什么语法现象，长这么大没见过？？？？？？？？？

c