题目内容
—I'm sorry to hear that Bill failed the exam again.
—Don't worry about him. I'm sure that he will never give up until he ________.
—Don't worry about him. I'm sure that he will never give up until he ________.
[ ]
A. succeed
B. succeeds
C. succeeded
D. succeeding
B. succeeds
C. succeeded
D. succeeding
B
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