当你告诉别人“我正在跳舞”时,说:A. I am singing .B. I am writing .C. I am dancing .
Where did you go your holidays ?A. for B. by C. to
He is than his mum .A. tall B. taller C. the tallest
I went to Xi’an July .A. on B . in C. at
He wants Sam chess with usA. playing B. to play C. plays
My brother Qingdao every year. A. visit B. visited C. visits