YOU SAID:

If the Earth is flat, then how do we have hills?

INTO JAPANESE

地球が平坦であれば、どうやって丘ができますか？

BACK INTO ENGLISH

If the earth is flat, how can you do a hill?

INTO JAPANESE

地球が平坦なら、どうやって丘を作れますか？

BACK INTO ENGLISH

If the earth is flat, how can you make a hill?

INTO JAPANESE

地球が平らであれば、どうやって丘を作ることができますか？

BACK INTO ENGLISH

If the earth is flat, how can you make a hill?