YOU SAID:
hello my best friend is a building
INTO JAPANESE
こんにちは私の親友は建物です
BACK INTO ENGLISH
Hello my best friend is building
INTO JAPANESE
こんにちは私の親友は構築しています
BACK INTO ENGLISH
Hi my best friend is building
INTO JAPANESE
こんにちは私の親友は構築しています
BACK INTO ENGLISH
Hi my best friend is building
You've done this before, haven't you.