yet
                    - Is everybody here?– Not yet… Look, there ____ the rest of our visitors!
 - Have you finished your homework ________? –Not ________. I was playing computer games.
 - Have you finished writing the letter_______? —-Not ______
 - Have you ________ watched the dolphin show in the Ocean Park in Hong Kong?—Not _________.
 - Have you finished doing the work_________?—Not_________.
 - 一 Have you finished your homework yet? — No, not yet. I think it’ll take me half an hour.
 - I have _____ decided when to leave, but my sister hasn’t decided_____.
 - Have you returned the book to him _______? Yes, I have______ returned it.
 - Has your sister visited Disneyland _____? —Yes, she has visited it ________.
 - Have you returned the book to the library _______? –Yes, I have ____ returned it.