单项选择题
[听力原文] W: Are you coming with us to Hilda’s birthday party M: I’d love to, hat I have an appointment with my dentist.
What do we learn about the man（）
A．He is ill. B．He will go to the party. C．He will see a doctor. D．He is going to see Hilda.
单项选择题 Where is Bill now（）
单项选择题 What did the mother ask Tom to clean（）
单项选择题 It's high time we（）something to stop air pollution.
