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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单项选择题
As we are on the point of ______some important business with them, we should like to know exactly about their credit standing.
A．transmitting
B．transferring
C．transacting
D．transporting
单项选择题
When people become unemployed, it is ______ which is often worse than lack of wages.
A．laziness
B．poverty
C．idleness
D．inability
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