31. We are waiting ______ for your absence.
| A．your explanation | B．to have your explanation |
| C．about your explanation | D．having your explanation |
In my opinion, parents and teachers are supposed to set an example of good behavior to children _____ they are role models to them.
| A．although | B．even if | C．unless | D．as |
Maybe he really should do more exercises from now on. ____, I hope he could get over soon.
| A．Somehow | B．Somewhat | C．Anyway | D．Anywhere |
John once worked in a remote mountain village school, which is _____ only on foot.
| A．accessible | B．acceptable | C．available | D．appropriate |
— What great changes have taken place in our city in the last few years!
— Indeed, many high buildings have _______all over the city.
| A．wound up | B．sprung up | C．held up | D．made up |
Chinese President Hu Jintao called for an immediate cease-fire in Libya _____ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan Province.
| A．to prevent | B．to have prevented | C．preventing | D．having prevented |