What is the man over there?——I don’t know for sure. But I think he can be ____ but a teacher.

The view ______ many scientists hold is ______ too much emission of carbon dioxide is destructive.[ ]

I’m crazy about music and I love music that I can sing along ___________.

himself to his lab research, thefamous scientist missed ________from the liver cancer

He will deliver a(n) _______ (演讲) on the subject of war and peace.