Without this year’s Nobel Prize in physics winner Charles Kao’s idea of fibrotic(光纤的)communications, the “modern” telephone and Internet _________impossible.
What shall we use for power when all the oil in the world has ____ ? A. given out B. put out C. held up D used up
-----Could you do me a favor and take these books to my office? -----Yes, _____.
-----Have you been to New Zealand? -----No, I’d like to, _____.
He hurried to the booking office only______ that all the tickets had been sold out.
They urged that the library_______ open during the vacation.