Andeison entered the classroom, ____book in ___hand.
The human mind can many tasks that other animals cannot, like using language and judging what other people are thinking.
It is a difficult problem for high school studentsthey can properly use the Internet.
Many countries are now setting up national parks _animals and plants can be protected.
It was my birthday, so all the drinks wereme.
Yan' an, a city in northern Shaanxi province, has seen great progress in its tourism industry over the past few years.