单项选择题
Your birthday was last week.wasn’t it？（升调）This question tag ____.（）
A.ask for agreement.B.ask for clarification.
单项选择题 Which of the following values have been discussed in the video（）
单项选择题 Which description is more polite（）
单项选择题 Which might be a better way to know whether a person is married or not（）
