问题
选择题
________, they have been struggling against the snowstorm for ten hours.[ ]
A. Up to now
B. By the time
C. From then on
D. In the future
答案
答案：A
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________, they have been struggling against the snowstorm for ten hours.[ ]
A. Up to now
B. By the time
C. From then on
D. In the future
答案：A