It is_____the pupils do in their spare time_____really______ them to take their place in society as citizens when they grow up.

We are sure one day the air in Beijing will be much ______ than today.

________ an important decision more on emotion than onreason, you will regret it sooner or later.

That’s the newmachine ______ parts are too small to be seen

don’t forget to bring your laptop with youtomorrow, OK — Oh, thank you. I wouldn’t bring it ifyou _____ me.