单项选择题

Your oral English is so good. You ______ it a lot before.

A. must practice
B. must have practiced
C. should have practiced
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I knew he wouldn't listen to me, but I kept on ______ to him.
A. talk
B. talking
C. to talk
单项选择题
She ______ in films when she was still a child.
A. made it
B. famous
C. succeed
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