When he heard the news, an ________ look appeared on his face at once.
We _____ a word unless she asks us_____.
It was _____ that I didn’t like to leave my room.
At the meeting, the old man _____ some good advice about bringing down the market price of housing.
With the school rules _____ by the students, the school has taken on a new look.
In the last twenty years, seven Canadian scientists _____ the Nobel prize!