Leo was late for class. So he _______ clean the classroom after school.
| A．made | B．made to |
| C．was made | D．was made to |
－Why does the river smell terrible?－Because the water_______.
| A．was polluted | B．has been polluted | C．will be polluted | D．has polluted |
一Have you read today’s morning paper?
－Not _______. What’s the latest news?
| A．only | B．yet | C．ever | D．just |
－How about the pollution in the countryside?
－Luckily, it’s not as serious as _______ in the big cities.
| A．that | B．it | C．one | D．those |
They had to operate _______his arm because it was broken in two places.
| A．with | B．/ | C．at | D．on |
－It was _______ great fun to be a host, wasn’t?
－Yes. That’s _______ experience hard to forget.
| A．／; an | B．a; an | C．; the | D．a; the |