Since the last quarter of 2010, there______a rapid fall in the volume of exports

游客2024-01-18  12

问题 Since the last quarter of 2010, there______a rapid fall in the volume of exports in this country.

选项 A、is
B、was
C、had been
D、has been

答案 D

解析 这是一道语法题,考点是动词的时态。动作发生在过去,但持续到现在,应该用现在完成时。
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