( ) I________ football. A.be good at B. is good at C. am not good at
What_____to trees in the different season ? A. happen B. happens C. happened
_____is exercise . A. Runing B. Running C. Run
_____do you play basketball ?Three times a week . A. How long B.How often C. How many
Yesterday we____a pair of runners and a T-shirt for Li Ming . A. buy B. bought C. is buying
Let’s ask the police officer ______some help . A. for B. on C. to