Homework

Letty went to Agua Prieta by bus last night.
Letty didn't go to Agua Prieta by bus last night.
Did Letty go Agua Prieta by bus last night?
How did Letty go to Agua Prieta last night?

Yesterday I ate spaghetti for lunch.
Yesterday I didn't eat spaghetti for lunch.
Did I eat spaghetti for lunch yesterday?
When did I eat spaghetti for lunch?   //  Yesterday