问题
选择题
The number of the people who joined in the journey down the Mekong River _____ four. [ ]
A. added up to
B. added up
C. added to
D. in addition
答案
答案：A
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The number of the people who joined in the journey down the Mekong River _____ four. [ ]
A. added up to
B. added up
C. added to
D. in addition
答案：A