用所给词的适当形式填空

1.My parents are _________ (satisfy) with my math result.             

2. Liu Xiang ran _________ (fast) in the Sydney Olympic Game.

3. A strong sand storm swept over the _________ (north) part of Huabei.   

4.Thank _________ (good). We found my little boy at last.

5.I have great ________ (interest) in math.