单词拼写，the boy told the teacher all had happened

补充 that 在all 后面，即 all －－ all that。

答案见：
湘教版七年级英语--单句改错专练500题及答案
http://www.xj-zx.com/Article/yingyushitiNo7/134402192_13.html

？拼写什么？是改错吧？
all改为what

the boy told the teacher what had happened

all - all that

T 大写末尾加上句号?
其他看不出来问题啊

all-what