The a_______ changed as she walked in.
The professor has brought in a good s_______ of teaching languages from abroad.
With the d_______ of modern agriculture and industry, our everyday life has improved a lot.
It was not immediately obvious that water was to be f_______ to the development of life.
The Chinese government did very well in p_______ SARS from speading.
She asked them not to discuss the matter in herp_______.
They have e_______ on the earth for more than 140 million years.
The moon is the earth’s s_______.
The doctor is g_______ with her.