He made up his mind to devote his life the river polluted.
| A．to prevent, to be | B．to prevent, from being |
| C．to preventing, to be | D．to preventing, from being |
7. Nobody believed his reason for being absent from his class _____ he had to meet his
uncle at the airport.
| A．why | B．was | C．that | D．because |
6. I like _____ in the autumn when the weather is clear and bright.
| A．one | B．that | C．/ | D．it |
5. Great changes have taken place in that college. It’s no longer _____ it was 20 years
ago, _____ it was so poorly equipped.
| A．what; when | B．that; which | C．what; which | D．when; that |
4. Though having lived abroad for years, many Chinese still _____ the traditional
customs.
| A．survive | B．observe | C．possess | D．Support |
3. It had been half an hour before she found herself _____ in the wrong direction of
her home.
| A．walking | B．to walk | C．walked | D．Walk |