81. This gentleman is very interested in singing. He often goes to the Karaoke hall with his friends and sometimes comes home very late, _____, very early in the morning.
-When__________ and visit our exhibition next month? - When_______, I will let you know.
--You forgot your keys when you left home in the morning. --Good heavens,___________.
My cousin Gorge went to Shanghai in _____ twenties in ____ 1980s, and has lived there ever since.
This new-type machine____________ little room.
--You don't look so well, Mary. What's the matter with you? --Why?___________.