We should know the rules for word order when we study Englis

we should r--- the rules for school party We should obey the traffic rules in order to keep ourselves 35.We should obey the traffic rules in order to keep ourselv we should observe traffic rules in order to keep ourselves__ we should obey traffic rules in order to keep ourselves____( I don't know when we should leave for Nanjing. we should do some execrises for our health in order to study We should ( ) the rules in our school. We should f____ the rules at school. We study for the revolution we study for the people 英语语法基础好的进The order when we should return hasn't reached us 这