I've had a cookie，but you'd better give me________．I want to taste again.

Tod thought he was       when the manager asked him for the advice on the new project.

—How many students passed the math test? — ________, for it was too much for them.

-- Who broke the glass?-- I suppose _____ must be one of the children.

Clothing made of man-made fibers has certain advantages over _____ made of natural fibers like cotton, wool or silk.