Complete the following sentences according to the context. The first letter has been given. （根据上下文完成下列句子，首字母已给。）
Shanghai is a large and m_______ city in China.
We must keep q_______ in the reading room.
I think that Kathy's salad tastes t_______. No one likes it.
I want to send him an e-mail. Please give me his e-mail a_______ .
You needn’t r_______ the book to the library this week. You can keep it for two weeks.