Rewrite the sentences with the same meaning

Rewrite the sentences with the same meaning.
1.the distance from Ha Noi to Hai Phong is about 100 km
It is about 
2.what is thế distance between Hai Duong to Hue?
How
3.she usually walked to school last year.
She used
4.although he studied hard,he didn't pass the exam.
Despite