All her time ____________ her students, so she has no time for housework.
| A．devoted to teach | B．is devoted to teaching |
| C．is devoting to teaching | D．devoted to teaching |
Noise is unpleasant, _____ when you are trying to sleep．
| A．especially | B．specially |
| C．extremely | D．naturally |
So hard-working _____ that he sets a good example to all the other classmates．
| A．he is | B．is he | C．does he | D．he does |
With more and more forests _____, many animals are facing the danger of dying out．
| A．to destroy | B．destroying |
| C．destroyed | D．to be destoyed |
As we all know, China is a developing country, _____ attracting more and more foreigners．
| A．the one | B．one | C．it | D．that |
The beautiful town, _____ we spent our summer vacation last year , lies at the foot of a mountain．
| A．whose | B．which | C．where | D．why |