初二典中点英语（快!）

初二典中点英语（快!）
1.They can hardly decide what they will do next.(N)
______ ______ for them to decide what ________ _______ next
2.He is so young that he can't look after himself well.
He is too young to _____ ______ _________ ______ ________ himself.
3.He tried his best ,but he still failed the exam.
_________ he tried his best ,but he still failed the exam.
(全部是同义句转换）