Read the sentence and choose the best answer.The price of diamond rings has raised sharply _______the price of gold rings has gone down.
A. when
B. as
C. while
D. otherwise
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_______ I know, the computer can never take the place of the human brain.
As for
B. As long as
C. So far as
D. As far as
You’ll surely make progress _______ you work with a strong will.
A. unless
B. until
C. as long as
D. as well as
I'll stay here _______ everyone else comes back.
A. even if
B. as though
C. because
D.until
Hard-working though he was, ________ there was never enough money to pay the bills.
A. /
B. and
C. but
D.therefore
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