单项选择题

As the director can't come to the reception, I'm representing the company（）

A．on his account
B．on his behalf
C．for his part
D．in his interest

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It’s time-consuming to locate the book in the bookcase, because the way he arranges books is quite （）

A. mighty
B. wholesome
C. undesirable
D. random
单项选择题
The pilot made an unexpected ______ because of engine trouble.
A. conclusion
B. crash
C. victory
D. landing
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