题目内容
In many European countries, one has to decide much earlier what one's career is going to be, and there
is less freedom in changing one's decision _____ one has chosen a particular path.
is less freedom in changing one's decision _____ one has chosen a particular path.
[ ]
A. once
B. before
C. until
D. as
B. before
C. until
D. as
A
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