These boys are all __(China)怎么填?

These boys are good at swimming.(同义句) These boys are_____ __ And all of these stamps are from China,too Are they all _____(China)?Are they all in______(China)?适当形式填 These are China stamps. 英语语法疑惑The boys are not doing a good job at all.are they?--__ All these changes will lead to a stronger China,__ country t These s___ you the history of China怎么填, These are all E______countries These notebook are my brother's.are those all __(your)? i __(be)in china for two months.怎么填? 改为感叹句These boys are friendly these are the boys clothes改错