问题
选择题
—Tony, you must have noticed the student who broke the glass.
—I'm sorry.I________attentively.
A.studied
B.was studying
C.am studying
D.would study
答案
答案:B
考查动词的时态。由答话人说“对不起”可知,当有人打碎玻璃时,他正在专心致志地学习,没有看到打碎玻璃的人。故使用过去进行时表示过去某一时间正在做某事,所以答案为B。