It was a time_______ the killer whales h
题型:选择题
问题:
It was a time_______ the killer whales helped the whalers catch the baleen whales.
A.when
B.that
C.then
D.which
It was a time_______ the killer whales helped the whalers catch the baleen whales.
A.when
B.that
C.then
D.which