In 1831, Faraday discovered that electricity moves through a wire ________ a magnet(磁铁) is moved near the wire.
.I would appreciate ____ if you could give me a hand.
.Lucy has been ____ a job everywhere since she graduated last month.
.---It’s noisy. --- The office upstairs ______ , which _______ two weeks
.---Hurry up , Michael! ---Goodness me! The class ____ .I’ll be late again.
.I just wonder _____ that makes him so excited.