问题
选择题
While she _________ TV in the sitting room, the bell________.
A．watches, rings
B．is watching, rang
C．was watching, rang
D．watched, was ringing
答案
答案：C
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While she _________ TV in the sitting room, the bell________.
A．watches, rings
B．is watching, rang
C．was watching, rang
D．watched, was ringing
答案：C