As a young minister, he was full of ______ ideas for social reform.
—Ready to give up guessing, Sandy? —No, no. Hold on! I think I _______ at the answer now.
He made a promisehe would not play computer games again at school.
Newly-developed materials for spaceships can _______ extreme weather conditions.
The first prize goes to _______ makes the greatest contribution to our school.
his homework, my son went downstairs to play basketball.