Sheep ____ (keep) by farmers for ____ (produce) wool and mutton.
问题描述:
Sheep ____ (keep) by farmers for ____ (produce) wool and mutton.
答
Sheep【are kept 】 by farmers for【producing】wool and mutton.
答
are kept ,producing
注:SHEEP 是复数,被动语态
FOR 后的动词要用ING形式