用it完成下列强调句

It was yesterday that Lucy attended the meeting.It was he that told me the good news.It was the house that we bought last week.It was 12 o'clock that they went to bed.It was because she missed the bus that she came to class late.n.+v.+n.随便选择一个名词结构，前面加It is(was) ,后面+that+剩余结构（徐磊语法里的）