单项选择题

________ at the Town Hall, the Queen was welcomed by the Mayor.

A．On reaching
B．At arrival
C．On arrival
D．At reaching
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单项选择题
The work in the office was ________ by a constant stream of visitors.
A．confused
B．hampered
C．reversed
D．perplexed
单项选择题
The application of the unemployed workers ________ the post is being carefully considered.
A．to
B．for
C．for
D．in
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