问题
选择题
The head of the company promised to deal with matters of this sort _____ he returned to his office.[ ]
A. until
B. while
C. by the time
D. the moment
答案
答案：D
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The head of the company promised to deal with matters of this sort _____ he returned to his office.[ ]
A. until
B. while
C. by the time
D. the moment
答案：D