(Question)
The hard working man was stuck at home after his injury, he tried to keep bust doing housework but it caused what? Choose the most suitable option to answer the above question. Options：  A. get tired  B. pain and suffering  C. fatigue  D. coughing  E. tiredness
(Answer)
B


(Question)
What do professors do to prove their points? Choose the most suitable option to answer the above question. Options：  A. teach courses  B. show research  C. school students  D. state facts  E. master physics
(Answer)
D


(Question)
What are you about to do If you're going to study in a library? Choose the most suitable option to answer the above question. Options：  A. concentrating  B. concentration  C. settle down  D. read books  E. concentrate
(Answer)
D