试题详情
- 单项选择题I couldn't have got to the meeting on time （）an earlier train. ( 章节：1 难度：1)
A、if I had not caught
B、unless I had caught
C、if ! did not catch
D、unless I caught
- B
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A、if I had not caught
B、unless I had caught
C、if ! did not catch
D、unless I caught
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