Studying alone, you are free to choose what to learn and when, you don’t need others’ agr

发布时间：2020-08-16 06:42:45

Studying alone, you are free to choose what to learn and when,      you don’t need others’ agreement.
A. while
B. if
C. though
D. as

网友回答

A. while
B. if
C. though
(答案→)D. as
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