【单选题】When ______ to recite the text, he still kept _______.
【单选题】将固定端改为可动铰支座支座,相当于去掉( )个联系
【多选题】中国是个多民族多宗教的国家,中国的宗教政策有
【单选题】Billy kept asking his mother if he could go to the movies and she ____________. [ ]
【单选题】He kept asking questions, but not a word _________.
【单选题】将固定端改为滑动支座,相当于去掉( )个联系