问题补充：
late, but also he forgot his books.
A. Not only did he turn up
B. Not only he turned up
C. Not only did he turn out
D. Not only he turned out
答案：
(答案→)A. Not only did he turn up
B. Not only he turned up
C. Not only did he turn out
D. Not only he turned out
解析：
这题考查not only在句首，用倒装句的用法：turn up是“露面”，turn out“结果是”，句意是：他不仅出现迟，还忘了书。选A。
