Mary and her sisters( )is happy怎么填

Mary and her sisters( )is happy怎么填 填出所缺单词:Her father buys___for her and Mary is very happy, Mary has two sisters and two brothers.She is( )her brothers mary is the tallest of her hour sisters Mary and Iare( )sisters.括号里填什么? Mary and Alan ____ (am/is/are)sisters. jim is tall ,but his sisters ,mary and ka 有什么区别 mary is the tallest of her hour sisters/,mary is the t Mary and Sally are .(sister) 应该填sisters还是填sister.哪位朋友知道?帮帮忙 1. May is 12,Mary is10. 2. May and Mary are sisters.（排序）↓ Mary with her sisters( )in bijing. A.are B.am C.is D.be Mary and her sister often ___ (shop) on Sundays.空怎么填?