Please don't play the guitar in the classroom.
不明白的再问哟,请及时采纳,多谢 !please play the guitar in the classroom改为否定句— — the guitar in the classroom pleaseDon't playcould you ask him to call me back?改为祈使句Ask him to callme back.could you ask him to call me back?改为祈使句please___ him to ___ call me backask...似乎多了个空