have you invited lucy and lily to go swimming with us

问题描述:

have you invited lucy and lily to go swimming with us
---yes,______ of them have come already.they are waiting for us in the room.
A.either B.both C.neither D.also

B
具题意:
你已经邀请了露晞和丽丽来和我们一起游泳吗?
是的,她们俩都已经来了,正在房间里等我们呢
A 是两个里的一个
C 是两个都没来
D 语法错
还有一个技巧,用了AC,都要跟单数,这里是用的复数