should
- To help a friend solve the problem troubling him,.
- We should consider the students’ request ______ the school library provide more books on popular science.
- We should do all we can the children who lost the chance to go to school.
- We should make____a rule for us that the last to leave the classroom shall turn the light off.
- We should pay close attention to safety in schools because of frequent reports about accidents ____ students got injured or killed while in school.
- We should think of ways to stop the waste from the factory _____ our living environment.
- You should spend more time ______ the lessons.
- Students should stay at home ________school nights.[ ]
- The nurse should care __________ the patients day and night.[ ]
- What should we say when we meet Americans __________ the tirst time.[ ]