His mother was very tired when she returned from the ride; so much so that she could not stand up.
His mother was very tired when she returned from the ride; so much so that she could not stand up.
他母亲坐车回到家里的时候已经累得站不起来了。
His mother was very tired when she returned from the ride; so much so that she could not stand up.
他母亲坐车回到家里的时候已经累得站不起来了。