Cars play an important role in modern life, but they ______ also cause many problems like air pollution.
| A．should | B．can | C．must | D．will |
—Tom, can you go shopping with me?
—No, I can’t. Actually ______ likes shopping.
| A．not someone | B．no someone | C．no everyone | D．not everyone |
It was last night ______ I saw the accident.
| A．when | B．that | C．who | D．which |
They keep horses and cattle, the former for riding, ______ for food.
| A．the latter | B．later | C．latter | D．the later |
. To improve your spoken English, you’d better listen to the tape ______.
| A．gradually | B．fluently | C．frequently | D．entirely |
______ he has made up his mind, no one can make him change it.
| A．Unless | B．Once | C．Until | D．As |