Задайте вопросы к предложению : They bought a present for their mums birthday the day before yesterday. Did...? Did...or...? Who...? What...? When...? Why...? Where...?

Did they buy a present for their mum's birthday the day before yesterday? Did they buy a present for their mum's birthday the day before yesterday or last week? What did they buy for their mum's birthday the day before yesterday? When did they buy a present for their mum's birthday? Why did they buy a present the day before yesterday? Where did they buy a present for their mum's birthday the day before yesterday?