Twins sister和Twin sisters有什么区别,什么时候用Twins sister,什么时候用Twin sisters.

Twins sister和Twin sisters有什么区别,什么时候用Twins sister,什么时候用Twin sisters. Lucy and Lily are ( ).A.twins sistersB.twin sisterC.twin sistersD.twins，sister 5Are you____?” “Yes,we are____brothers. A.twin,twin?B.twins,twins C.twins,twin?D.twin,twins6.I have a____.A.twin sister B.twin's sister C.twin sisters D.twins sisters7.He often helps ____with____English.A.her,her B.she,her C.her,she D.she,she How old is your ____!A,sisters B、twins C、twin sister D、twin sisters 选c,为什么啊. Liu Ying and Liu Li are _____.They look nearly the same .Atwin sister B twins sisters C twin sister A and B are twin sister.twin和sister要加s吗? Are you ( Yes,we are ( )brothers.A twin ,twin B twins twins C twins twin 为什么 twin sister是什么意思 a twin sister twin sisters与twin sister的区别 twin的所有格是twins'还是twin's twin是单数还是复数,twins呢? they are ________ (twin) sister. The coats are over there A twin B twins C twin's D twins' I don't know the ____names A.twin's B.twins' C.twin D.twins They are ____ .A twin B twin brothers C twin sisters D twins twins sisters与twins sisters的区别twin sisters 与twins sisters的区别 Tom and Tim are twins.they are twin b什么