Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now listen to the conversation. What is the conversation mainly about

Who is the man talking toA．A hotel clerk.B．An estate ag...

单项选择题Who is the man talking to

What will continue to be ______ it is today--next in im...

单项选择题What will continue to be ______ it is today--next in importance to oxygen

Linda did not have time to go to the concert last night...

单项选择题Linda did not have time to go to the concert last night because she was busy ______ for her experiment.