_______?—I am going to visit my uncle.

Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.

________ is no doubt _______ Mo Yan, this year’s Nobel Prize winner in Literature, ever did so much on his way to success.

______ do you play on your computer? —I often play Counter Strike and Final Fantasy. [ ]

______ will be our teacher of English in the coming year?—Mrs. White, I guess.