V- Each of the following sentences has one mistake. Identify and correct the mistakes. 21. The little boy didn’t know how lacing his shoes. ………………………………………………………………………………………………………. 22. I would rather live on a farm than to live in a city. ………………………………………………………………………………………………………. 23. The workers are building a new bridge which is 150 meters in high. ………………………………………………………………………………………………………. 24. This text is too long for me to read it. ………………………………………………………………………………………………………. 25. The course is good, but more hard than I thought. ………………………………………………………………………………………………………. VI- Give the correct form of the words in brackets. 26. D.E Huge was the_____________of microphone. (invent) 27. People in the countryside are___________________. (friend) 28. If it doesn’t rain soon, there’ll be a great____________of water (short)) 29. Taxi drivers have to have a very good____________on the street names. (know) 30. Environmental_______________is every body’s respomsibility. (protect)