I saw him crossing the street. The sentence structure is _______.
_____he is ill, ____ he goes to school.
--_______ do you exercise? -- Three times a week.
--Did you go to the park last Sunday?--______. But it was too crowded.
—_____ does this pair of new Nike shoes belong to?— It must be Jeff’s. It’s his birthday present from his dad.
_______ useful information she offered us! We all thank her.