Everyone likes to buy things ______ a good price.[ ]

Do you __________ an American friend?—No, I don’t. But my sister __________ one.

What do you think of “Where are we going ,dad”, Mum?—Perfect! Though I have seen it once, I want to see it _____ time.

is she? —She’s a nurse.

It is no doubt that Liu Xiang is _______ favorite star.