Every device ______in the plane must be designed and made with great care so as to make sure that nothing goes wrong in operation.
| A．fitted | B．to be fitted | C．fitting | D．being fitted |
How strange! These years my birthday always falls _____.
| A．on the Sunday | B．on a Sunday |
| C．on Sunday | D．at a Sunday |
As _____ writer, he was _____ complete failure.
| A．a, a | B．a, the |
| C．不填，不填 | D．a, 不填 |
The operation is _____ success and the patient is now out of _____ danger.
| A．a, the | B．a, 不填 |
| C．不填, the | D．不填，不填 |
Since tasting the excitement of _____ big city life, she never wants to live in _____ country again.
| A．the, the | B．不填，不填 |
| C．the, 不填 | D．不填，the |
It is really _______ useful dictionary and _______ dictionary every one of us needs.
| A．a, a | B．a, the |
| C．the, a | D．the, the |