—Have you paid the rent of the house?—The rent of the house? .
--You forgot your keys when you left home in the morning.--Good heavens,___________.
It is impossible for____________ little room.
It is impossible for ______ little children to do ______ much work in ______ a short time.
This new-type machine____________ little room.
--You don't look so well, Mary. What's the matter with you? --Why?___________.