Not everybody could be expected to know all the answers, ______ some questions called for educated guesses rather than general knowledge.
A. as
B. so
C. such
D. once
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______ you try, you’ll never lose your English accent.
A. No matter what
B. How hard
C. No matter how hard
D. Whatever hard
______ the bridge were packed with cars and buses, it could still carry twice the load.
A. Despite
B. Provided
C. Unless
D. Even if
The airplane crashed and over a hundred passengers were killed, ______.
A. and that shocked the world
B. and which shocked the world
C. this fact shocked the world
D. which shocked the world
The time will surely come ______ ordinary people could operate computers as well.
A. while
B. when
C. as
D. on which