Lucy ,Jim and Li Lei ( )good friend.A.is all B.are all C.all is D.all are
问题描述：
Lucy ,Jim and Li Lei ( )good friend.A.is all B.are all C.all is D.all are
答
B are all
复数用 are
all放在be动词之后
有不明白的地方再问哟,祝你学习进步! (*^__^*)