10.5.2 Choose the correct words. 1 A lot of Edison's inventions were realistic/practical ones that were useful in real life. 2 This is a never-ending/long-lasting light bulb; it lasts for 1,000 hours. 3 You have to work hard to reach/ manage your goals in life. 4 Teams of people contributed to/ achieved Edison's inventions. 5 You've been working too hard; you should take some time out/ down. 6 Harry was so tired that he fell/ dropped into a heavy/deep sleep. 7 I couldn't work out what to do so I decided to sleep over/on it.