Thousands of years ago,men lived in caves.这是首字母填空ago.为什么用ago?

China's history is five _____ years.A.thousand B.thousands C.thousands of Thousands of years 和thousands years 有什么不同? 上千年的历史怎么说?英语是a thousands of years of history还是a thousands of years history有没有 OF 有没有A with thousands of years history对不对？到底哪个对呢 a herd of thousands It___(build) thousands of years ago. Over thousands of years啥意思 Coffee has been a part of people's lives for the thousands of years. China has ____ history.A.thousands years B.thousands year C.thousand year D.thousand of years'按照卷子上打出来的~ 回答一道英语选择题China is a country with five _____ years of history.A.thousands B.thousand of C.thousand D.thousands of请写出答题思路 英语翻译Overhanging a vast canyon,but giving evidences of thousands of years of survival,are suggestive masses of granite. The grade palace has a history of ____A.three thousand yearsB.thousand of yearsC.three thousands yearsD.three thousands of years coffee has been a part of people's lives for thousands of years,and it is still a favorite a couple tens of thousands belonging to a period of history that is thousands of years in the past单词释义a____ 有没有many thousand,several thousand,和several thousands of2 Sharks have been on earthfor many _____ years.A thousand B thousands C thousands of D thousanded of选什么为什么 a thousand ,thousands of ,thousand of 和thousands and thousands of 的区别与用法 People have had pet dogs for thousands of years. 翻译 the factory with thousands of workers------------(open)for ten years