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56.He writes a________(week) letter to his parents.
57. The traffic on the highway makes an________(end) noise.
58. I like to take a vacation on a warm and________(sun) beach.
59. I’d like to go to the cinema, but I am________(able) to.
60. The island attract________(adventure) travelers.
61. He has a limited________(know) of English grammar.
62. After treatment, Tom recovered from his eating________(order).
63. Taking these drugs could seriously________(danger) your health.
64. The President gave a________(convince) speech against crime.
65. Our environmental________(aware) has increased greatly over the years.