When making modern cameras , people began to_______ plastics for metal.
A、surroundD
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The engineers in this lab spent several weeks _______their plans for the new bicycle.
In the United States, the foreign policy is decided by the ________ government, not by each state.
Wecannot_______allthemagazinestogether.
After working for twenty hours without any rest, the doctors were _______.
Wedonothavea_______schoolinourinstitute.ThehighestdegreeweprovideforthestudentsisaB.A.andaB.S..
