英语1.Isthisflat___youoncelivedin?
1.Is this flat ___ you once liv in? 2.Is this the flat ___ you once lived in? 2.Is this the only flat ___ you once lived in? 2.Is this the flat in___ you once lived? 2.Is it the flat ___ you once lived in? A.which ere e one at 先行词作主句的表语时关系代词用THAT,为
选C是因为这句话没有先行词,实际上this flat是这句话的主语,改成陈述句就是this flat is _____ you once lived in.所以选C用the one 作先行词,你说的没错,先行词作主句的表语时关系代词用that,所以如果在the one 后面加上that也是对的。