She has been working hard day and night, which of course, _______ her pale face.
| A．accounts for | B．stands for |
| C．goes for | D．answers for |
This problem may lead to more serious ones if_______ unsolved.
| A．making | B．left | C．remained | D．keeping |
________, you need to give all you have and try your best.
| A．Being a winner | B．To be a winner |
| C．Be a winner | D．Having been a winner |
Many human activities also _______carbon gases, which will result in global warming.
| A．put off | B．send off | C．let off | D．set off |
Take good care of the resources or they will be ______ soon.
| A．run out | B．used up | C．run away | D．using up |
Eventually the government rebuilt the bridge _______the appeal and even pressure of the public.
| A．in response to | B．in favor of | C．in place of | D．in terms of |