depend on， see off， by accident ， take away， in the end
【小题1】When I was shopping in the mall，I met my math teacher __________ .
【小题2】In the past， the agriculture __________ the weather.
【小题3】She is going to the train station to __________ her parents.
【小题4】We should __________ our litter when we leave the park.
【小题5】The policeman caught the thief __________ .