英语翻译It's raining,so he ____ ____ take an umbrella.

英语翻译It's raining,so he ____ ____ take an umbrella.
英语翻译
It's raining,so he ____ ____ take an umbrella.

英语翻译It's raining,so he ____ ____ take an umbrella.
填‘has to’

has to不得不
给你参考，谢谢。

has to ,很简单的呃

has to【表客观条件所逼】不能用must【主观想法】