X. Rewrite the following sentences using the provided word and keep meaning as that of the root one.
36. It’s thought that the accident was caused by human error.
The accident is
37. I wasn’t there yesterday, so I didn’t know who he was.
If I
38. If you do not try hard, you can’t pass the examination.
Unless
39. They spent more money, they had to work harder.
The more
40. The teacher has invited all the students in the class.
All the students in the class
XI. Complete the second sentence so that it has a similar meaning to the first sentence, using the word in brackets.
41. I last saw her three years ago. (haven’t)
42. “Will you be free tomorrow?”, she said. (If)
43. He never suspected that the money had been stolen.
At no time
44. She sings so well that she has been asked to make a record. (such)
45. I’d prefer to stay at home rather than go to the circus. (’d rather)
XII. Write complete sentences using the suggested words .
46 . It / be / necessary / learn / English / nowadays.
47. My sister / fail / exam / because / laziness.
48. My brother / wish / he / speak English / fluent / as / native speakers.
49. Watch / television / may discourage / people / take exercise / play sports.
50. Mr. Bill/ used/ go/ swimming/ when/ he/ young.