单选题
Never before (I have seen) (anyone) who has the skill (John has) when he (repairs) engines.
A、
I have seen
B、
anyone
C、
John has
D、
repairs
【正确答案】
A
【答案解析】
[分析] 否定词never before置于句首，句子倒装。改“I have seen”为“have I seen”。
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