We should keep the __________(平衡) of nature.  

When the bull got close to him, he c__________ stepped aside to let it pass.

It is not only of immense size, but is extremely a__________ as well.

The next car the boy stopped did not take him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish __________(边界).

His situation is very c___________ , so no one is willing to get involved.

He feels c___________ of passing the examination.

Both Pompeii and Loulan became lost c__________ about 2,000 years ago.

.The old couple have decided to a________ a boy and a girl from Yushu though they have three daughters and two sons of their own . 

He has a good sense of __________________ (方向).

It is a pity that so many buildings were ___________(毁坏) in the big fire.