YOU SAID:

unfortunately, I will have to put my dog down and let it run free.

INTO JAPANESE

残念ながら、私は私の犬を降ろし、それを自由に走らせなければならないでしょう。

BACK INTO ENGLISH

Unfortunately, I'll have to drop off my dog and let it run freely.

INTO JAPANESE

残念ながら、私は私の犬を降ろして自由に走らせなければならないでしょう。

BACK INTO ENGLISH

Unfortunately, I'll have to drop off my dog and let him run freely.

INTO JAPANESE

残念ながら、私は私の犬を降ろし、彼が自由に走らなければなりません。

BACK INTO ENGLISH

Unfortunately, I dropped off my dog and he had to run freely.

INTO JAPANESE

残念なことに、私は私の犬を降ろし、彼は自由に走らなければなりませんでした。

BACK INTO ENGLISH

Unfortunately, I dropped off my dog and he had to run freely.