问题：
-Where __________ you put my dictionary?
-I left it on your desk when you __________ to Tom.
[ ]
A. did; spoke
B. did; were speaking
C. have; is speaking
D. did; speaking
-Where __________ you put my dictionary?
-I left it on your desk when you __________ to Tom.
B. did; were speaking
C. have; is speaking
D. did; speaking
-I left it on your desk when you __________ to Tom.
[ ]
A. did; spoke B. did; were speaking
C. have; is speaking
D. did; speaking
参考答案：