Whose book is this It’s not___ book,____ is over there

Did you enjoy yourself at the dinner party?— Yes, I’ve never been to________one before.

Were you at home at 7:00 yesterday evening I called you but no one was there. —Sorry, we ___________ a movie at the theatre at that time.

The project ______ last month but unfortunately it had to be prolonged because of the financial problem.

What is the blouse ____________—Silk. It feels soft.