There are ___ sharing bikes in many cities．So there will be ___ pollution．（ ）
| A． |
less and less； more and more |
| B． |
less and less； fewer and fewer |
| C． |
more and more； less and less |
| D． |
fewer and fewer； less and less |
There are ___ sharing bikes in many cities．So there will be ___ pollution．（ ）
| A． |
less and less； more and more |
| B． |
less and less； fewer and fewer |
| C． |
more and more； less and less |
| D． |
fewer and fewer； less and less |
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