作业帮①John______(not finish)his work yet.② I________(teach)at this school since 1985
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①John______(not finish)his work yet.② I________(teach)at this school since 1985
①John______(not finish)his work yet.② I________(teach)at this school since 1985
①John______(not finish)his work yet.② I________(teach)at this school since 1985
①John__hasn't finished____(not finish)his work yet.② I___have taught_____(teach)at this school since 1985