问题
选择题
________work has been done to improve the people's living standard.[ ]
A. Many
B. A great many
C. A large number of
D. A great amount of
答案
答案：D
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________work has been done to improve the people's living standard.[ ]
A. Many
B. A great many
C. A large number of
D. A great amount of
答案：D