2. 自考
  3. I was out of town at the time, so I don’t know exactly how it______.

I was out of town at the time, so I don’t know exactly how it______.

admin2013-05-15  17
问题 I was out of town at the time, so I don’t know exactly how it______.
选项 A、was happening
B、happened
C、happens
D、has happened
答案B
解析 本题考查动词happen的用法。那会儿我出城了，所以我确实不知道发生了什么。根据短语“at the time”应选一般过去时。
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