The organization was founded (建立) for the ________ of poor children .

It is _____ Tom often surfs the Internetplaying games ______ makes his parents very angry.

Excuse me, teacher, can I ask you something about the last class I didn’t quite understand it.–Sure! Please feel _________to ask me anything!

Isn’t that Ann’s husband over there?– No, it ________ be him. I’m sure he doesn’t wear glasses.

What’s the weather like today—- It’s ________ warm ________ yesterday.