I don’t think this TV set is of good quality. Canyou replace it with a new one— ___________. But I have to talk to my manager first.

When the old man ____ to walk back to his house, the sun ____ itself behind the mountain.

4．Politeness is a(n) ____ phenomenon among all the social groups, but it is marked by different cultures.

How long have you ______ your gold ring?[ ]

I’ll be free ___ seven o’clock