I know Mr. Brown; we ______ to each othe
问题:
I know Mr. Brown; we ______ to each other at an international conference.
A.are introduced
B.are been introduced
C.were introduced
D.had been introduced
I know Mr. Brown; we ______ to each other at an international conference.
A.are introduced
B.are been introduced
C.were introduced
D.had been introduced