in this way he was able to solve the mystery.____he did ita,like this,b,that's how为什么选b/ a不是也行吗
问题描述：
in this way he was able to solve the mystery.____he did it
a,like this,b,that's how
为什么选b/ a不是也行吗
答
b, that's how
这是固定用法，that's how sb do sth
答
he did it 正常语序
like tihs 放在句首要 部分倒装