单项选择题

As a young man, Tom used to ______ in the town, ______ to find a job for a few coins.

A．knocking about; waited
B．knocked down; waiting
C．knock about; waiting
D．knocked down; waited
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All ______ is needed is a supply of oil.
A．the thing
B．that
C．what
D．which
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______, they set out to break the record for the crossing-channel swim.
A．Well equipped
B．Well equipping
C．Well equips
D．To equip
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