求求求____they your brothers?A.Is B.Are C.Am
求求求
____they your brothers?A.Is B.Are C.Am D.Be
Is this your brother?No,___.It is my friend.A.it is B.he is not C.he isn't D.it isn't
Is the little boy____(jim)brother?用括号内所给的词的适当形式填空
That's Lily and that's Lucy.They are_____(sister)