.Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
| A．which. | B．whether | C．what | D．that. |
I'm going to spend the winter vacation in Shanghai,_______I have relatives.
| A．which | B．that | C．where | D．when |
________ you ought to do now is to see a doctor at once.
| A．How | B．That | C．Which | D．What |
The medicine is on sale everywhere. You can get it at _______ chemist's.
| A．other | B．some | C．another | D．any |
The sign reads "In case of_______fire, break the glass and push______red button. "
| A．/; a | B．/; the | C．the; the | D．a; a |
—Will you go to Tom's birthday party tomorrow?
—No，________invited to, for she is the last person I'd like to see.
| A．if | B．until | C．when | D．even though |