问题
选择题
_______work has been done to improve people's living standards. [ ]
A. Many
B. A great many
C. A great deal of
D. A large number of
答案
答案：C
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_______work has been done to improve people's living standards. [ ]
A. Many
B. A great many
C. A great deal of
D. A large number of
答案：C