Как исправить слова выделенным подчерком? when did you put the milk? i cant find it. we are meeting the director at 3rd april

Wine did you put the milk? I cant find it.
we are meeting the director frt 3rd april

Where did you put the milk? I can' find it.
When означает когда, а where куда. То есть: Куда ты положил молоко? Я не могу найти его. , а не когда.
We are meeting the director in 3rd April. Предлог at используется только со временем (We are meeting Zoe at 4 o'clock)