填空题 If you ____ your host's hospitality, tell him that you had a wonderful time.

填空题 Our teacher is really ____: she never tells jokes.

填空题 If you are going to visit a foreign country, you'd better learn about the ____ there.

填空题 In English, we may call somebody, for example, Dr Wang or Professor Wang, but we don't use "Teacher" ____ family name to ____ people.

填空题 People in Britain ____ it polite to say "I'm sorry" even though it is not their fault.

填空题 If you don't like it when a person asks you personal , don't get ____, just tell them.

填空题 Why don't you join me in a(n) ____ to our distinguished guests?

填空题 "冰冻三尺，非一日之寒" is a famous Chinese ____, meaning the same as "Rome wasn't built in a day."