She was so ()in her job that she didn't hear anybody knocking at the door.

单项选择题You () her in her office last Friday; she' s been out of town for two weeks.

A. needn't have seen
B. must have seen
C. might have seen
D. can' t have seen

单项选择题Although I like the appearance of the house, what really made me decide to buy it was the beautiful () through the window.

A. vision
B. look
C. picture
D. view