单项选择题
—（） — He teaches physics at a school.
A.What does your father want to do? B.Who is your father? C.How is you rfather? D.What is your father?
单项选择题 Students should be encouraged to use（）Internet as（）resource.
单项选择题 One potential danger is（）the information could be used by others to your disadvantage.
单项选择题 I had my meals（）when I was ill in bed with a bad cold.
