Look at that girl! Is it Susan?—No, it _______ be her. She has gone back to her hometown.

I have decided to _________my bad habit of sleeping in class.—That’s good news. I hope you can do it this time.

Is __ your brother?

fantastic documentary it is!– Do you mean the hot film “Diaoyu Island—-The Truth”?

What do you think of Tom? —He has been working very hard. ______ he is an advanced worker.