The factory _________ since two years ago.
| A．has been open | B．has opened |
| C．was open | D．opened |
In the past ten years, our hometown named Yandu（盐都） _____a lot.
| A． changes | B．changed | C．was changing | D．has changed |
If there ______no buying and selling of animals, there ______no killing in nature.
| A．is, will be | B．will be, will be | C．is, is | D．will be, is |
Many accidents_____ by careless drivers last year.
| A．are caused | B．were caused | C．have caused | D．will cause |
With the help of the Internet, information can _____every corner of the world quickly.
| A．reach | B．get | C．arrive | D．go |
—What do you think of tomorrow’s football match?
—_____difficult for us_____ the match.
| A．We’re, to win | B． We’re, winning | C．It’s, to win | D．It’s, winning |