He used this discovery to ________ a machine for making electricity. Faraday also showed how electricity affects chemical ubstances.
My watch _____ at nine o’clock, but now it _____.
He did all he could to _______ but nobody noticed him.
Many famous hospitals are competing _____ an excellent doctor, who came from the USA last week.
He accidentally _____ he had quarreled with his wife and that he hadn’t been home for a couple of weeks.
—We usually go hiking for vacation. I like it, but I want to try something more challenging this year.—_____