_____________ on the portrait, mother was deep in thought.
__________ it rain, the crops_____________.
--You forgot your keys when you left home in the morning.--Good heavens,___________.
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?___________.