问题
More than two _______years ago, people knew little about the universe.
A:thousands
B:thousand
C:thousands of
D:thousand of
B:thousand
C:thousands of
D:thousand of
正确答案是：
同类题型
About _____of the students in our school took part in the school sports meeting last Friday.
You shouldn’t ______ your hope. Everything will be better.
Whose book is this? There is no name on it.—Let me see. Oh, it’s . I lost it a few days ago.
Her English is very ______, but she can’t sing English songs ____.