Peopleonthegrasslandof    isnowKazakstanwerethefirstto...

問題詳情：

 People on the grassland of     is now Kazakstan were the first to achieve both riding and milking horses．

A. where         B. which                   C. what                     D. as

【回答】

C

知識點：連詞

題型：選擇題