______ I always felt I would pass the exam, I never thought I would get an A.A. While B. Once C. If D. Until
World Wide Web was invented in 1991 by English scientist ,Tim Burners-lee.
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.