Đáp án:
1,How far is it from the post office to vinh university?
   It is about 5 km from the post office to vinh university
2.How far is it from vinh masket to cua lo beach?
   It is about 10 km from vinh masket to cua lo beach
3.How far is it from his house to hue?
   It is about 300 km from his house to hue
4.How far is it from ha noi to ho chi minh city?
   It is about 1500 km from ha noi to ho chi minh city
5.How far is it from her school to lam river?
   It is about 200 m from her school to lam river
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