试题题干
Fill in the blanks with one of the items given below:
A. He's studying the work of 
known American novelist.
B. His ideas are so difficult that people can really understand them.
参考答案
正确答案：![]()
Fill in the blanks with one of the items given below:
A. He's studying the work of known American novelist.
B. His ideas are so difficult that people can really understand them.