They keep the goat ________ so that it will not go away·
They keep the goat ________ so that it will not go away·
A、tied up
B、trying up
C、tie up
D、to tie up
【正确答案】:A
【题目解析】:keep sth done 使某物被…… 题目中,goat 与tie 之间为被动关系,因此,应该选A ,keep the goat tied up 把那头羊拴好。
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