—I’m sorry I have failed again in the math exam．
— _________ ? You’ve been working hard at the subject．
| A．How | B．How come | C．Why not | D．When |
Towards _______evening, ________ cold rain began to fall down.
| A．an; a | B．/ ; a | C．the; the | D．the; a |
Whether life will continue on the earth for millions of years ______will depend on ____this problem can be solved.
| A．to come; if | B．coming; if | C．to come; whether | D．coming; whether |
We expressed the hope________ they would come and visit our hometown again.
| A．which | B．that | C．why | D．how |
Charlie Chaplin was loved by all who watched the film for his determination _____
overcoming difficulties.
| A．to | B．with | C．in | D．on |
Although I can walk about, there is still a ____ pain in my leg.
| A．weak | B．soft | C．strong | D．slight |