“Where’s my book? I can’t find it”.“It _______ on your desk.”

Last year I _________ drive. I used to take the bus.

We can see light in his office. He___________ be in his office.

The Internet is really ________ to us. We can get a lot of things from it.

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