[参考答案]对话题型基础练习 Test 21
61. was doing
62. had put
63. to lock
64. a
65. that/which
66. missing
67. moment/second/minute/instant/while/when
68. or
69. it
70. against
61. was doing
62. had put
63. to lock
64. a
65. that/which
66. missing
67. moment/second/minute/instant/while/when
68. or
69. it
70. against
