2. 职称英语
  3. In 1800 the northwest Acoast of North America Bis one Cof the world’s least expl

In 1800 the northwest Acoast of North America Bis one Cof the world’s least expl

游客2025-02-04  34
问题 In 1800 the northwest Acoast of North America Bis one Cof the world’s least explored Dareas.
选项 A、 
B、 
C、 
D、 
答案 B
解析 Is is present tense where a past tense verb is needed . with the time marker 1800. Correction: was.
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