The Harry Potter books are quite popular; they are in great ______ in this city.
| A．quantity | B．progress |
| C．production | D．demand |
The report says ________ number of endangered animals is increasing，for ________ number of them are being hunted or having no food to eat.
| A．the；a |
| B．the；the |
| C．a；a |
| D．a；the |
Don’t worry！There are ________that the situation is improving.
| A．signs |
| B．marks |
| C．symbols |
| D．signals |
I hope that full advantage is ________ of our library.
| A．made |
| B．claimed |
| C．taken |
| D．brought |
I’ll need a bit more ________ information before I can help you.
| A．advanced |
| B．underground |
| C．beforehand |
| D．background |
Education should not be restricted to any ________ age group.
| A．particular |
| B．special |
| C．unusual |
| D．specific |