2. 职称英语
  3. By next year it_______necessary to double the production quota to keep up with m

By next year it_______necessary to double the production quota to keep up with m

游客2025-06-15  30
问题 By next year it_______necessary to double the production quota to keep up with market demands.
选项 A、were
B、will be
C、has been
D、being
答案 B
解析 空格内应填入单数形式的谓语动词。这里不需要分辨主动语态和被动语态，只要考虑时态。时态在大部分情况下都是解题的提示。看到有next year，这是不是一个有力的提示?
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