--How old is she? --I don't know exactly,but I think she's _____.
A. at she twenties
B. in she twenties
C. in her twenties
D. at her twenties
Hurry up,_____you'll miss the early bus.
A. and
B. or
C. but
D. so
I often chat ____ my friends on QQ.
A. in
B. about
C. with
D. of
--What____you do last weekend? -- I____ to the beach with my friends.
A. do ;went
B. did ; go
C. did;went
D. will;gone
微信支付 
支付宝支付