Generally speaking, students’ inner motivation with high expectations from others       essential to their development.

There are millions of websites on the Internet and there _______ a lot of useful _________on the websites.

There ______ some sheep and a dog at the foot of the hill.

 You, who ______ his good friend, should help him get out of trouble. 

 The writer and professor, whom I often refer to at the meetings, ____ famous for those works.