I think it must have been in 1967 ____ I visited the Great Lake the first time.A:that B:when C:in which D:where
问题描述:
I think it must have been in 1967 ____ I visited the Great Lake the first time.
A:that
B:when
C:in which
D:where
答
B
答
选a.the first time,所以必须用that