问题:
Was it on that morning ________ you left for Beijing ______ he discovered our secret?
A.that; where
B.which; that
C.when; that
D.that; when
Was it on that morning ________ you left for Beijing ______ he discovered our secret?
A.that; where | B.which; that | C.when; that | D.that; when |
参考答案: