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52. Drivers have to ________ your seatbelt whenever they drive. A. fasten B. put C. tie D. put on 53. This is Linda's hat, and those shoes are ________ . A. our B. hers C. their D. her 54. We should ________ the street at the zebra crossing. A. walk across B. walk through C. walk on D. walk 55. We should use ________ light bulbs in our homes. A. a bit energy B. little energy C. low energy D. efficient 56. We can ________ the problem of energy shortage by using solar energy. A. get B. carry out C. solve D. recover 57. ________ Johnny Depp is a famous actor, he has failed in his recent films. A. Despite B. Although C. However D. Because 58. The white cat is Helen's, and the back cat is ________ . A. of mine B. my C. mine D. I 59. I found the book so ________ that I couldn't put it down. A. tiring B. gripping C. shocking D. boring 60. Nuclear energy is ________ , but it is dangerous. A. natural resource B. fossil fuel C. renewable D. non-renewable 61. Alternative sources of energy are ________ and safe A. short B. enough C. abundant D. not enough 62. Mary wasn't angry, ________? A. wasn't she B. is she C. was Mary D. was she 63. My brother and I often come to school ________ foot A. at B. by C. in D. on 64. The festival ________ every year at the end of August. A. takes B. occur C. takes place D. held 65. The major cause of death for children living in the slums is ________. A. immigration B. density C. illiteracy D. malnutrition 66. Solar energy is ________ and it can be replaced easily. A. new B. renewable C. non - renewable D. renew 67. I ________ marbles when I was young, but now I didn't. A. didn't use to play B. have played C. play D. used to play

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