8. We can watch the stars ………… the sky ………….. night.
A. on-at B.in-at C. on-on D. in-in
9. You’ve been reading this book for 3 hours, ………………?
A. haven’t you B. have you C. are you D. aren’t you
10. They are …………….. good children that everybody love them.
A.very B. such a C. too D. so