We must the train being late it always is.

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hoping　　　 to hope we hoped　　 being hoped

There being; to go It was; left It had; left There was; to go

So though otherwise but

why we learn it hard that we learn it hard  which we must learn　 when we should learn

set up set out set about set aside

that so that to in order that in order to

put up take off set off turn off

hoping　　 to hope we hoped　 being hoped

stop… from polluted keep…being polluted prevent… being polluted stop…from polluting

set up set out set about set aside

to keep; polluted to prevent; being polluted keep; polluted prevent; being polluted

to be polluted from polluting off being polluted being polluted

being missed missing to miss miss

hoping　　　　　　　　　　　　　　　　 to hope 　　 we hoped　　　　　　　　　　　　　　　 being hoped

being missed missing to miss miss

that so that to in order that in order to

having canceled being canceled having been canceled canceled

protect; against polluting stop; polluting keep; being polluted prevent;from being polluted

why we learn it hard that we learn it hard which we must learn when we should learn