— have you danced?
—Since I was six.
| A．How often | B．When |
| C．How long | D．What time |
In order to keep healthy, you should eat _______ meat, _______ vegetables and take enough exercise.
A.less, less
B. less, more
C. fewer, more
The children _____ on the playground when I left school.
A.were playing
B.are playing
C. was playing
________give him a ticket to a ball game?
A.Why not you
B.Why don’t you
C. Why not to
Mary said she to school the next Sunday.
A.won’t go B.isn’t go C.wouldn’t go
My father will be back from Nanjing ___ a week.
A.in B. after C. behind