2. 外语
  3. They______us since five o’clock this morning until now.

They______us since five o’clock this morning until now.

admin2014-08-25  28
问题 They______us since five o’clock this morning until now.
选项 A、are helping
B、help
C、have helped
D、have been helping
答案D
解析 since five o’clock this morning until now自从今天早上五点钟直到现在，这一段时间一直在帮助我们。
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成人本科学位英语

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