YOU SAID:
I should have done the laundry yesterday
INTO JAPANESE
昨日洗濯物を行っている必要があります。
BACK INTO ENGLISH
You must have done the laundry yesterday.
INTO JAPANESE
あなたは昨日の洗濯を行っている必要があります。
BACK INTO ENGLISH
You are doing laundry yesterday.
INTO JAPANESE
昨日のランドリーをやっています。
You love that! Don't you?