As we all know , bad eating habits and a of exercise may lead to health problems .
| A．lack | B．limit | C．need | D．demand |
—The window is dirty.
—I know. It ______ for weeks.
| A．hasn’t cleaned | B．didn’t clean |
| C．wasn’t cleaned | D．hasn’t been cleaned |
John plays football _______, if not better than, David.
| A．as well | B．as well as |
| C．so well | D．so well as |
Don’t worry. I’ll help to ______ the guests.
| A．host | B．hold | C．wait | D．accept |
Nowadays some stars like________ because they can ________ a lot of money.
| A．advertisement; bring | B．advertising; make |
| C．advertise; earn | D．advertisement; make |
These plants are watered___________.
| A．each other day | B．every other day |
| C．each of two days | D．every of two days |