Составьте общий и специальный вопросы.

1) Bob left a message at his office yesterday. (where)

2) Children go to school five days a week. (where)

3) Mary will join our sports club to take part in the competition. (why)

4) Mike was taking his dog out for a walk when I saw him. (when)

5) The children could skate on the lake last winter. (where)

6) Ann was singing an old English song at the party. (where)

7) We had a tasty pizza at our restaurant last week. (when)

В прошедшем времени ставим Did и глагол в начальной форме

Did Bob leave a message at his office yesterday?

для специальных вопросов ставим вопрос в данном случае Where в начале did и глагол в нач. форме и убираем часть предложения в котором есть ответ. Where-где, тоесть убираем in his office - в офисе

Where did Bob leave a message

Если это в настоящем времени то ставим Do для you, they, we

Do children go to school five days a week

Where do children go five days a week

в остальных случаях ставим вопрос который дан