We ______ carefully but _______ nothing.

I’m really sorry. I can’t go to the cinema with you. I am tired.

People were perhaps more honest a long time ago when life was very different from _________ it is today

How long is it ___ the new math teacher came here?—Two weeksThe students just wonder how ___ they can go with him.[ ]

Will the foreigners have any problems talking with Chinese people in China—I don’t think so. Now ______ the young ______ the old are learning to speak English.