A.select inB.opt inC.opt upD.select up
A. select in
B. opt in
C. opt up
D. select up
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A.priceB.productionC.demandD.consumption
A. price
B. production
C. demand
D. consumption
A.competitionB.priceC.timeD.reality
A. competition
B. price
C. time
D. reality
A.onB.offC.withD.for
A. on
B. off
C. with
D. for
A.criticalB.obviousC.awkwardD.visible
A. critical
B. obvious
C. awkward
D. visible