Great changes ________ since we entered E-times. And the computer is widely used throughout the world.

_____ great progress we have made, weshould not be conceited.(自大的)

When we got to the citycenter, ______shops were still open, but most of them were closed. A.the B.some C. many D. /

Please don’t put ________ into the rubbish bin because it’s very dangerous.

Mike take a bus to the office, but now he walking there.