根据句意，用括号内所给单词的适当形式填空。
Li Yongbo is one of the most famous ________(coach) in China.
Because of colour           (blind), Tom can’t join the army.
Having cold drinks in such weather may be        (harm) to your stomach.
You should spend your spare time more         (wise), instead of doing meaningless things.
Lucy is my _______(close) friend in my class and I’m willing to share my problems with her.