几道高一英语模块三的题,急啊~~~

汗死……我越来越头疼英语啊……最近学从句啥啥的真是要我的命,特别是放了寒假全忘光了……帮忙看下下面的题,最好能稍稍解释一下,谢谢!

1、IthappenedthatIhadheardabouthimbeforeIcametotheschool

I_______________heardabouthimbeforeIcametotheschool.

2、Hisworkinghardmadeushappy.

__________________hardmadeushappy.

3、Heinsistedthatsheshouldn'tbepunished.

He_________her____________punished.

4、她看到的这张脸是一副老人的面孔.

Thefacethatshesawwas________anoldman.

（这个应该不是belongto吧……哎……死也想不出了……）