单项选择题

We were pleased to note that the early morning delivery didn't______to the traffic jam of the busy city.

A．aid
B．amount
C．add
D．attribute
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单项选择题
A year ago the firm had a______loss of 4.3 million dollars or 20 cents a share af ter all necessary deduction.
A．total
B．gross
C．net
D．clear
单项选择题
Without proper lessons, you could______a lot of bad habits when playing the piano.
A．keep up
B．pick up
C．draw up
D．catch up
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