根据句意，用括号内所给单词的适当形式填空。
People all dress ________ in the best clothes when Chinese New Year comes. (他们)
What useful ________! I decide to follow them right now. (建议)
The audience held their _______ as the murderer went closer to the victim. (呼吸)
Bill and Kate often _______ before, but they are good friends now. (意见相左)