Mary must keep her mind on her medical s
题型:选择题
问题:
Mary must keep her mind on her medical studies now, so it would be years ______ she could think about marriage.
A.before
B.when
C.since
D.until
Mary must keep her mind on her medical studies now, so it would be years ______ she could think about marriage.
A.before
B.when
C.since
D.until