问题
选择题
The rise in electricity costs has _______ our difficulties in carrying out the project. [ ]
A. added up
B. added up to
C. added
D. added to
答案
答案：D
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The rise in electricity costs has _______ our difficulties in carrying out the project. [ ]
A. added up
B. added up to
C. added
D. added to
答案：D