单项选择题
A．His job is difficult. B．His job is not interesting. C．He doesn’t know how to do his job. D．He only sleeps for a few hours a night.
A．She doesn’t know how long they will have to wait. B．They are going to be in Wuhan at eight. C．They are going to be very late. D．The train doesn’t go to Wuhan.
A．No one knows how Kate gets to work. B．She doesn’t think the microphone works. C．She threw the microphone away. D．It’s surprising that Kate could repair the microphone.