This is not an economical way to get more water; ____, it is very expensive.

Do you. know_______lady in red?一Yes. She is a teacher of a university.

After that we never saw her again, nor________ from her.

At the meeting place of the Yangtze River and Jialing RIiver ,one of the largest cities in china.

What do you think about _______dress in the shop window?— Oh, it’s beautiful. Amy will be pleased if she can have it as _______birthday present.