The new railway station has been in _ since 2003,now it can _ people.(service)People _ the river in the past,but now the _ has become better.(pollute)We began to use the station in 1998.=The station _ _ _ _ since 1998.=The station _ _ _ _ since 1998.
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The new railway station has been in _ since 2003,now it can _ people.(service)People _ the river in the past,but now the _ has become better.(pollute)We began to use the station in 1998.=The station _ _ _ _ since 1998.=The station _ _ _ _ since 1998.
The new railway station has been in _ since 2003,now it can _ people.(service)
People _ the river in the past,but now the _ has become better.(pollute)
We began to use the station in 1998.=The station _ _ _ _ since 1998.=The station _ _ _ _ since 1998.
The new railway station has been in _ since 2003,now it can _ people.(service)People _ the river in the past,but now the _ has become better.(pollute)We began to use the station in 1998.=The station _ _ _ _ since 1998.=The station _ _ _ _ since 1998.
The new railway station has been in served_ since 2003,now it can serve_ people.(service)
People polluted_ the river in the past,but now the pollution_ has become better.(pollute)
We began to use the station in 1998.=The station began to be used_ _ since 1998.=The station is_ to_ be_ used_ since 1998.