Mr. Smith,       with the       result of the experiment, sat on the chair, smiling.

The painting was         what it used to be because it was once watered by rain.

Professor Smith has written some short stories , but he is _____known for his plays .

1. Every possible means should be made full use of _______ the lives of the injured people in subway tunnel collapse

The little boy still needs the________20 dollars to do with some things________.