摘要：25．You look ．What do you ?A．worried; worried about B．worry; worried aboutC．worried; worry about D．worry; worry about What time is it? There are many ways you can 26 the time．You may have a watch on your wrist．You can look at a clock on the wall．You can listen to the radio or 27 a number on the telephone to get the time． It has not always been 28 to know the time．But a long time ago．People looked at the 29 to tell the time．They could tell the time by looking at it in the sky: morning．noon or afternoon．Around the year 1400.people began to use the hourglass． It was made 30 glass with sand in it．It was wide at both ends. 31 narrowin the middle．The sand ran from one end to the other in one hour．At the end of every hour peop1e turned the glass over and it began 32 Hundreds of years later a machine called 33 was invented．After that people made small clocks so that they could 34 them in their pockets．These pocket clocks were called watches．Then.during the first world warmen started 35 their watches on their wrists．It was easier and faster to tell the time．

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