Fish is ________ and expensive at this time of the year in this area.
C
inshortsupply：“缺货、供货不足”
Peoplewhocan’t_______betweencolorsaresaidtobecolor-blind.
Ayearlater，withthenation’seconomy________，Bush’sapprovalratingdroppedbelow40percent
The outline of rooftops and chimneys ________ against the pale sky.
Robotsdifferfromautomaticmachines________aftercompletionofonespecifictask，theycanbereprogrammedbyacomputertodoanotherone.