Sir, a Mr. Wang is waiting for you at the gate. ________ he come in or stay there?
--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?___________.