Grammar Challenge

would take would have taken will take took

telling to tell tell having told

submits submitted submit has submitted

was were am would be

Praising Praised Being praised Having praised

would come would have come will come came

are speaking is speaking were speaking speak

must sign must be signed must have signed is signed

he arrived did he arrive he did arrive arrived he

consider to consider considering consideration

already started had already started has already started was already started

is are has have

must be signed must sign must have signed must been signed

Not knowing Not known Not to know Not having known

is believed believes is believing believed

do did have done are doing

lived has lived had lived was living

listened was listening had listened has listened

is was be were

paid had paid have paid would pay