（） up at the clock on the wall, the secretary found it was already midnight. ( 章节：3 难度：1)
- A、looking
- B、Look
- C、To look
- D、Looked
正确答案:A
答案解析:有
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（） up at the clock on the wall, the secretary found it was already midnight. ( 章节：3 难度：1)
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