At our factory there are a few machines similar to______ described in this magazine.

You will never succeed _________ you devote yourself to your work .

－When was the poor boy born －His parents died early. Some villagers only know he was born _________ a cold winter morning.

He is eager to try something he has never tried before.—Oh, I see. That’s _______ he’s different from others.

The purpose of technology is to make iteasier ,______ it more difficult.