It ________ some time _________ I realized the truth

So absorbed ________ in the research that she didn’t hear someone knocking at the door.

Alan, it’s late. Why not go to bed— Jenny hasn’t come back yet. I ______ for her.

I like going to the movies with friendsand__sports.

What do you think of the concert?— , it’s not bad, though several songs are out-of-date[ ]