问题补充:
Polly observed that she by a tall man in a dark coat when she the faces around her on the train.
A. was watched; stared at
B. was being watched; glanced at
C. was being watched; glared at
D. was watched; looked at
答案:
A. was watched; stared at
(答案→)B. was being watched; glanced at
C. was being watched; glared at
D. was watched; looked at
解析:考查时态。根据语境可知Polly注意到她正被一个高个子的男人盯着,前用过去进行时的被动语态;glance at一瞥。故选B。