YOU SAID:
すごく寒いです!今日は家にいよう。
INTO JAPANESE
すごく寒いです!今日は家にいよう。
BACK INTO ENGLISH
It's so cold! Let's go home today.
INTO JAPANESE
それはとても寒いです!今日は帰りましょう。
BACK INTO ENGLISH
It's so cold! Let's go home today.
That didn't even make that much sense in English.