Question

When the teacher came in , the students _______ about the film.

A．are talking	B．talked
C．were talking	D．talk

Answer 1

C

解析试题分析：句意：当老师进来的时候，学生们正在谈论那场电影。are talking 现在进行时；talked 一般过去时；were talking 过去进行时；talk一般现在时。根据句意和句中的When the teacher came in可知，这里应该用过去进行时态，故选C。
考点：考查动词时态。