根据句意和汉语注释，写出单词的正确形式。
Lily often does well in the writing ___________(竞赛). She is interested in taking part in them.
Please read all the _________________(指示) before you start to do the work.
He never ____________(混合) business with his own feelings.
Today students are very busy with their homework and they have much ____________ (少) time to play outside than usual.