Various optional courses being available, we can choose ________ based on our own interest.
| A．either | B．each | C．one | D．it |
When the policeman stopped us, we all looked questioningly at him, ________.
| A．nervously and puzzled | B．nervous and puzzling |
| C．nervous and puzzled | D．nervously and puzzling |
I started as ________ office clerk, and turned ________ department manager three years later.
| A．the; the | B．an; a |
| C．an; / | D．the; / |
Each of the 400 people received from their boss ________ gift—“Who moved my cheese？”， ________ bestseller in the US, which helped them understand how to deal with changes in their lives and work.
| A．the; / | B．a; / | C．a; a | D．the; a |
I found that she was unhappy and didn't say ________ word all ________ way home.
| A．a; the | B．/; / | C．a; / | D．/; the |
Nowadays some hospitals refer to patients ________ name, not case number.
| A．of | B．as | C．by | D．with |