______ OFF THE LIGHTS BEFORE ______ OUT.A. TO TURN / TO GO B. TO T...

15. ______ off the lights before ______ out.a. To turn / to go b. To turn / go c. Turn / go d. Turn / goingIV. READING COMPREHENSION :A. Read the text carefully and then choose the correct answers.Many people think of computers as very modern inventions, products of our newtechnological age. But actually the idea for a computer was worked out over two centuriesago by a man called Charles Babbage.Babbage was born in 1791 and grew up to be a brilliant mathematician. He drew up plansfor several calculating machines which he called “engines”. But despite the fact that hestarted building some of these, he never finished any of them. Over the years people haveargued whether his machines would ever work. Recently, however, the Science Museum inLondon has finished building an engine based on one of Babbage’s designs. It has taken sixyears to complete and more than four thousand parts have been specially made. Whether itworks or not, the machine will be on show at a special exhibition in the Science Museum toremind people of Babbage’s work.