Mr.Green wanted to know the r____ that Tom was late for school什么意思

Mr.Green wanted to know the r____ that Tom was late for school什么意思
Mr.Green wanted to know the r____ that Tom was late for school什么意思

Mr.Green wanted to know the r____ that Tom was late for school什么意思
r____这个应该是填reason
格林先生想知道汤姆上学迟到了的原因

reason

reason mr.Green想知道Tom迟到的原因