参：1-5 DBCAA 6-10 ADACB 11-15 DBCAA 16-20 BCDBA 21-25 CDDBA 26-30 CDCAB 31-35 DCABD 36-40 BACAC 41-45 BBCBC 46-50 ADAAB 51-55 DGEAF
56. The carbon monoxide (in their house).
57. Because she knew they were still in danger.
58. When he understood Shelby’s unusual behavior.
59. They would have died.
60. She felt very proud.
短文改错：
61. What I want to give ... 去掉back
62. ... but neither of them ... but → since / because
63. My father works hardly ... hardly → hard
. ... spent most of his time ... spent → spending
65. ... bury herself in her books. bury → buries
66. Therefore, all of them ... all → both
67. ... thanks for them. for → to
68. ... they can get relaxing ... relaxing → relaxed
69. ... make more friends here. here → there
70. ... take care their health. their前加of
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