英语高手帮忙填介词~

I__WAS__(be) tired, but happy today. I__HAVE BEEN WRITING__(write) my play Since January, and now I__AM LOOKING__(look) for actors to perform in it. It__IS__(be) exciting to think of them saying the words I__IMAGINED__(imagine) for months. I have already found one enthusiastic actor who__IS__(be) super. He__IS MAKING__(make) a film right now, but__HAVE PLANNED__(plan) to be in a play for many years.
I__DESIGNED__(design) several advertisements for my play. We__WILL PRINT__(print) them next week. Tickets__WILL GO__(go) on sale next month. Writing__IS__(be) tough work, but I__HOPE__(hope) it will all be worthwhile, and I will be famous when the play__OPENS__(open)!

am;have written; am looking; is; have imagined; is; is making; has planned; designed; will print ; are going to go ; is; hope; opens