题目内容
There are three _________ sheep on the farm.
A.thousand | B.thousands | C.thousand of | D.thousands of |
C
此题考查名词的量。确切数量常用数词+hundred/thousand/million/billion+名词的复数形式;不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式.
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