I don’t know who invented _______telephone, it’s really _______ most useful invention.

I didn’t know his telephone number. ________ it, I ________ then.

What do you think of the movie? — It’s fantasticThe only pity is that I _____ the beginning of it[ ]

Will you two go to the show tomorrow?—No. We’re going to a lecture, or at least I’m planning ____.

Getting rid of bad habit is________forming a good one[ ]