单项选择题
A.on
B.over
C.at
D.of
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单项选择题
A.toolsB.instrumentsC.equipmentsD.types
A.tools
B.instruments
C.equipments
D.types
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单项选择题
A.carriedB.takenC.workedD.brought
A.carried
B.taken
C.worked
D.brought
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