After a talk with his mother, the little boy has seen to _____ that the same mistake doesn’t happen again.
As we all know, one unfortunate outcome of Internet use is that it damages people’s ability _______ normal lives.
—Are you against the Internet, Zhu Fei?—No. I believe that the Internet has positive effects on our lives and there are two main points _______ must be included when we analyse it.
Money and education change Pip. Before long he becomes vain and ashamed of his background and dislikes it _______ Joe comes to visit him in London.
It was so dark that I couldn’t ______ the words written on the wall.
Because a lot of classics were written so long ago, their language characteristics are quite different from ______ of modern works.