Listen to the two girls by the window. What language ?A. did they speakB. were they speaki

问题补充：

Listen to the two girls by the window. What language ?

A. did they speak

B. were they speaking

C. are they speaking

D. have they been speaking

答案：

A. did they speak

B. were they speaking

(答案→)C. are they speaking

D. have they been speaking

解析：考查时态。根据Listen to the two girls by the window.可知，“听”这个动作是正在进行，应该使用现在进行时，排除A；过去进行时指在过去某一时刻正在发生的事情，这里没有过去的时刻，排除B；D项是现在完成进行时，与语境不符，排除D，故选C。