I think he has tried his best to improve his handwriting, 　　　　?

Have you ever stopped _____ how our lie_____ if the world ran out of ol

Before you go to Canada, you need to learn more it.

– How’s your new class teacher?– We ______ ask for a better one. All my classmates love him so much.

It’s generous _______ them to donate money to UNICEF.They think it important _______ them to help poor children go to school.