I think he must have seen me at the meeting last night, ______?

He often ________ the table before supper.

Mike’s parents have bought a 2-floor house with a swimming pool.— Oh, it________ be very expensive.

Boys and girls, please hand in your homework after class.— Oh, my god ! I __________it at home.

Students used to_____ information from newspapers or magazines, but now they are used to ______ for it on the Internet directly.