YOU SAID:

To make matters worse, his mattress was the worst.

INTO JAPANESE

さらに悪いことに、彼のマットレスは最悪でした。

BACK INTO ENGLISH

To make matters worse, his mattress was the worst.

INTO JAPANESE

さらに悪いことに、彼のマットレスは最悪でした。

BACK INTO ENGLISH

To make matters worse, his mattress was the worst.