问题
选择题
he 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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he 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