have a great time, by the way, at the end of, make sure, ask for

【小题1】________ , will you be free tomorrow afternoon?
【小题2】The children ________ at Ann's birthday party yesterday.
【小题3】________ that you turn off the TV when you leave the room.
【小题4】Walk along the street, and you can see the post office ________ it.
【小题5】Just now Bill called his mother and ________ help.