He studied English in prison from a teach-yourself book, but he has never heard a word of it ______________.
A. speaking
B. spoken
C. to speak
D. to be spoken
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The goals ______________________ he had fought all his life no longer seemed important to him.
A. after which
B. for which
C. with which
D. by which
No matter how frequently __________________ the works of Beethoven always attract large audiences.
A. performed
B. performing
C. be performed
D. being performing
1. There are still some people in the world who ______________ cold, hunger, and insufficient clothing .
A. result from
B. suffer from
C. prevent from
D. derive from
We must adhere to (坚持)the________that everyone must be treated fairly.
A. principle
B. principal
C. property
D. procedure