例句： How old are you?

例句： Automation by means of computers.

例句： The aeroplane was flying a few feet above the sea.

例句： The dog has worms.

例句： The strongest man( that) you can think of cannot tear the log apart with bare hands.

例句： The meat was condemned as unfit for human consumption.

例句： The mountain is 3500 meters high.

例句： A fly kept annoying me.

例句： The cat made little rushes to and fro after the ball.

例句： In the summer, tourists flock to the museums and art galleries.