The boy _____ has two lovely dogs.
5个回答

The boy _that lives next door_ has two lovely dogs.=对.

你问: 为什么不能用who live next door. ?

答: 可以.

"The boy who lives next has two lovely dogs." =对.

但你必须确定老师给的其中一个答案是: "who lives next door."

如果 "lives" 少了一个 "S", 像你上面所写的 "who live next door",那这答案就错了.