﹣Tim, you spent too much time on computers. It's harmful to your eyes.
﹣ see. Thank you. I will do more sports instead.( )
A.is good forB.is bad for
C.is helpful to
--_____ you ever ____ to Beijing? -- Yes, I went there last year.
---Isn’t the trip boring? --- . I’d like to sleep at home instead of going out.
-____you ever ____with a group? -Yes, I have .
---_______ he _______ from Beijing? ---No, he _______.
------ __ does your father go to see your grandmother ? ------Once a month .