---I don’t want to go to school on foot. What should I do? ---You try asking your father for a bike, or you can go by bus.
My brother spent all morning_____ soccer with his classmates.
When we went into the park, we saw someone _____ Chinese Kungfu.
Lisa used to ________the bus to go to school,but now she is used to ________there.
Students should learn how ________ problem.
—Why is Linlin practicing speaking English? —________ abroad for further study.