根据句意填入单词的正确形式咋写?

根据句意填入单词的正确形式咋写?
根据句意填入单词的正确形式：
1.My brother is two years __________(old)than me.
2.Tom is as ________(fat) as Jim.
3.Is your sister __________(young) than you?Yes,she is.
4.Who is ___________(thin),you or Helen?Helen is.
5.Whose pencil-box is __________(big),yours or hers?Hers is.
6.Mary’s hair is as __________(long) as Lucy’s.
7.Ben ______ (jump) ________ (high) than some of the boys in his class.
8.________ Nancy sing __________ (well) than Helen?Yes,she _____.
9.Fangfang is not as _________ (tall) as the other girls.