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第91页

信息发布者：

C

C

B

coming

excited

talking

plans

see

watch

fireworks

packets

emails

fun

became cloudy

much oil

The sign on the tree

makes the air dirty

use water to wash clothes

keep our city clean

go to school by bus or metro/take the bus or metro to school

C

C

A

B

C

B

C

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