I hear the tall girl wearing glasses is your new classmate. She’s from America, _____ ?

─             did they go to work last week ?     ─Once .

—____—They’re English books.

 — He hardly spent any time on his subjects, _________?—_________, so he did badly in his lessons.

—Meat isn’t really dangerous , is it?--Oh! ____! It’s not at all good for our health.