All the clerks went home _________ Mr. Yang,for he had to finish his work.
I have a sister ________ Wangfang.
Jenny plays _______ piano, and I play _______ basketball every day.
John was born _______ June 6, 1985.
Could you please_____ the window? A. to open B. open C. opening
Are you good at ______? A. swim B. swimming C. to swim