He recognized me _____ he saw me

It’s a pity that I can only live here for two days _______.—Why not stay for another day I know you have three days off.

Mike gave me a lovely kitty and told me that it required ___ carefully.

Aren’t we living a happy life–You should not be content with what you have._______, you must be better in every aspect of your life.

下列各句中，加线的成语使用不恰当的一项是（ ）