-Do you know Sally?-Yes. I often saw her _______ in the gym.A. swim B. swam C. swimming
There are many ________ .A. book B. trees C. water
He can ______ English .A. speak B. say C. tell
Are you good at _______ football ?A. playing B. play C. plays
I go to school _____ bike .A. on B. of C. by
---________ do you do exercise ?---Once a week .A. How long B. How often C. How soon