.Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
| A．which. | B．whether | C．what | D．that. |
As you know, the castle was ______ the famous castle in London.
A. modelled after B. modelled by
C. named by found after
After the former manager returned from abroad, our company _______ and the production doubled.
| A．came to life | B．came back life |
| C．recovered to life | D．returned to life |
If you ______ Mary, ask her to come and see me.
| A．lose sight of | B．catch sight of |
| C．are in the sight of | D．are at the sight of |
The machine is so advanced that it will start ______ you press the button.
| A．constantly | B．cautiously |
| C．instantly | D．severely |
What _______ the doctors most was that they could not find the cause of the strange disease.
| A．enjoyed | B．puzzled |
| C．charged | D．promised |