问题补充：
Never before to what his parents expect of him more than it is today ．
A. he has failed; live up to
B. he failed not; come up with
C. has he failed; live up to
D. did he failed; come up with
答案：
A. he has failed; live up to
B. he failed not; come up with
(答案→)C. has he failed; live up to
D. did he failed; come up with
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