We don’t believe _____ little children can do ____ much work in such a short time.

---Can you guess _________ the new Nike sports shoes?---Yes. Maybe he asked his grandpa to pay for them, I think.

—Have you finished your homework ________? --Not ________. I was playing computer games.

My sister can’t cook, I can’t, ________ .

He goes to school by bus, but he walks ______after school.