★ Grammar for TOEFL
__ the new policy has been implemented, the company is expected to see a significant reduction in operational costs and increased productivity.
A. After
B. While
C. Unless
D. If
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The engineer explained __ the new system would improve efficiency and reduce costs, making the overall operation more streamlined compared to the previous model.
A. why
B. that
C. unless it was tested thoroughly beforehand,
D. while he was designing the first prototype,
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