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 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