问题详情:
The trouble with such resources as coal, oil and gas ______ that they are not
renewable.
A. was B. are C. have been D. is
【回答】
D
知识点:主谓一致
题型:选择题
问题详情:
The trouble with such resources as coal, oil and gas ______ that they are not
renewable.
A. was B. are C. have been D. is
【回答】
D
知识点:主谓一致
题型:选择题