Social attention should be paid ________our earth from________.
| A．to preventing; being polluted | B．to prevent; polluting |
| C．to prevent; being polluted | D．to preventing; polluted |
Jenny was very sad over the loss of the photos she had shot at Canada, ____ this was a memory she
especially treasured.
| A．as | B．if | C．when | D．where |
____ Chinese traditional painting, Sally has come to China to learn how to paint.
| A．Adoring | B．To adore | C．Having appealed | D．Appealing |
Since everyone would like to find an apartment near the university, there are very few ____ apartments in the area.
| A．free | B．vacant | C．empty | D．reserved |
The U.S.A. made a lot of excuses in an attempt to make war on Iran. However, its ____ purpose lay in the plentiful oil there.
A. incredible B. fundamental C. flexible D. identical
---You ought to have warned him of the danger!
--- ____! But he wouldn’t listen!
| A．So did I | B．So ought you | C．So I did | D．So I have |