One reason Crystal has bee so famous is that he is very quick thinking, and is often able to new jokes about the people and things around him.
A. e up with
B. e across
C. e up
D. e to
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(答案→)A. e up with
B. e across
C. e up
D. e to
解析：考查短语辨析。A. e up with想出；B. e across偶然遇到；C. e up发生；D. e to到达。句意：Crystal变得如此出名的原因之一是他的迅速思维，并常常能够想出他周围人和事的新的笑话。故A正确。