2. 职称英语
  3. How long have you ______?A、borrowed the bookB、been backC、bought the bikeBHow

How long have you ______?A、borrowed the bookB、been backC、bought the bikeBHow

游客2025-07-07  16
问题 How long have you ______?
选项 A、borrowed the book
B、been back
C、bought the bike
答案 B
解析 How long是问时间段的问句，而其他两项中的动词都是表时间点，是非延续性动词。
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