The old man kept one black cat and two white _______.
| A．one | B．ones |
| C．those | D．one’s |
She has bought herself ______ dress
| A．a cotton purple expensive | B．an expensive purple cotton |
| C．a purple expensive cotton | D．a cotton expensive purple |
Although the small room is the large one, it is more beautifully decorated.
| A．one- third the size of | B．the one- third size of |
| C．the size of one-third | D．one-third of the size |
Wind power is an ancient source of energy we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
When changing lanes, a driver should use his turning signal to let other drivers know___.
| A．whichever lane he is entering | B．which lane he is entering |
| C．whichever lane is he entering | D．which lane is he entering |
One reason for her preference for city life is she can have easy access to places like shops and restaurants.
| A．that | B．how | C．what | D．why |