The new China was founded in 1949, _____
题型:选择题
问题:
The new China was founded in 1949, ______ great changes have taken place.
A.since when
B.after which
C.in which
D.when
The new China was founded in 1949, ______ great changes have taken place.
A.since when
B.after which
C.in which
D.when