YOU SAID:

I once thought that bears wear woolly mammoths!

INTO JAPANESE

クマはマンモスを着ていると思ったことがあります！

BACK INTO ENGLISH

I once thought that a bear was wearing a mammoth!

INTO JAPANESE

クマがマンモスを着ていると思ったことがあります！

BACK INTO ENGLISH

I once thought that a bear was wearing a mammoth!