There will be less pollution ( ) the air.这里要填什么,A.on B.in C.for

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Therewillbelesspollution()theair.这里要填什么,A.onB.inC.forTherewillbelesspollution()theair.这里要填什么,A.onB.i

There will be less pollution ( ) the air.这里要填什么,A.on B.in C.for
There will be less pollution ( ) the air.这里要填什么,A.on B.in C.for

There will be less pollution ( ) the air.这里要填什么,A.on B.in C.for
选B
意思是“空气中的污染”

b

in 吧。。。空气里的污染会变少