问题:
While she TV in the sitting room, the bell______.
[ ]
A. watches; rings
B. is watching; rangs
C. was watching; rang
D.watched; was ringing
While she TV in the sitting room, the bell______.
B. is watching; rangs
C. was watching; rang
D.watched; was ringing
[ ]
A. watches; rings B. is watching; rangs
C. was watching; rang
D.watched; was ringing
参考答案: