The students were ____ over the ____ problem, listening to the teacher with a ____
expression on their faces.
| A．puzzled; puzzling; puzzling | B．puzzled; puzzling; puzzled |
| C．puzzling; puzzling; puzzled | D．puzzling; puzzled; puzzling |
This dictionary is __________ to my translation, but that one is __________.
| A．a great help; of no use |
| B．very helpful; of no any use |
| C．great help; helpless |
| D．important; of few importance |
The two cakes are of __________ size, but the one they bought last week was twice __________ size of them.
| A．the; the | B．a; the |
| C．a; a | D．the; a |
You can see that the young graduate is just of __________ height.
| A．average | B．ordinary |
| C．special | D．regular |
I'd rather have a room of my own, however small it is, than __________ a room with someone else.
| A．to share | B．to have shared |
| C．share | D．sharing |
In the 21st century, all nations must take their __________ of responsibility for the global safety.
| A．blame | B．charge |
| C．share | D．notice |