Studying alone, you are free to choose w
题型:选择题
问题:
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
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