Once out of the earth’s gravity, the astronaut is by the problem of weightlessness.
| A．affected | B．effected |
| C．related | D．offered |
____ he grows up can he understand your intentions.
| A．Unless | B．Once | C．Only when | D．Ever since |
She is not very ____ about the idea of going camping. I think she will stay at home reading.
| A．optimistic | B．enthusiastic | C．confused | D．curious |
The prize of the game show is ＄30,000 and an all expenses ____ vacation to China.
| A．paying | B．paid | C．to be paid | D．being paid |
The woman ____ herself a writer has never written any books.
| A．calling | B．called | C．calls | D．to call |
___ the room, the nurse found the tape-recorder ___.
| A．Entering; stealing | B．Entering; gone |
| C．To have entered; being stolen | D．Having entered; to be stolen |