24. ---Is there any flight to New York?
--- I think there ______ be, for it is snowing so heavily.
| A．shouldn’t | B．mustn’t | C．can’t | D．needn’t |
In hot weather, an old tyre can break again easily it’s mended.
| A．when | B．where | C．which | D．that |
____ 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 |