单项选择题

Bear in mind that no part of this book may be reproduced ______ written permission from the author.

(A) unless
(B) when
(C) without
(D) for
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单项选择题
The World Bank is composed of five branches, each ______ its own budget and carrying out separate duties.
(A) having
(B) has
(C) to have
(D) is having
单项选择题
The general manager is planning to fly to Paris and stay there for ______ to supervise the operation of the new branch office.
(A) sometime
(B) some time
(C) sometimes
(D) some times
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