应该是：
They have to cross a river between the school and the village.
不得不　have to
~~~~~~~~~~～～~~~~祝你进步,如对你有帮助,请及时采纳~~~~~~~~~~~~~~~~~~ 应该是：
They have to cross a river between the school and the village.
不得不　have to
~~~~~~~~~~～～~~~~祝你进步,如对你有帮助,请及时采纳~~~~~~~~~~~~~~~~~~