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

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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
单项选择题
That was so serious a matter that l had no choice but ()the police.

A. called in
B. calling in
C. call in
D. to call in
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