单项选择题
[听力原文] M: Hello. Jane. is Bill feeling any better today W: Oh, yes. But the doctor says he’ll have to stay in bed.
Where is Bill now（）
A．At the office. B．in his own house. C．On his way to work. D．In the hospital.
单项选择题 It's high time we（）something to stop air pollution.
单项选择题 We agreed to accept（）they thought was the best tourist guide.
单项选择题 It was not until he arrived at the station（）he realized he had forgotten his ticket.
