—What happened? I called you several times yesterday evening, but I couldn't get through.
—Sorry, my sister and I on the phone all the time.
A. talked
B. have talked
C. were talking
D. have been talking
网友回答
A. talked
B. have talked
(答案→)C. were talking
D. have been talking
解析：C 考察时态。由所设语境可知，答语应该是：昨天晚上你给我打电话时，我姐姐和我在煲电话粥。因此应该选择过去进行时。