---When did you see the bird last night?
题型:选择题
问题:
---When did you see the bird last night?
---It was at about ten thirty ______ I got home.
A.before
B.when
C.that
D.until
---When did you see the bird last night?
---It was at about ten thirty ______ I got home.
A.before
B.when
C.that
D.until