Topics: Grammar for TOEFL
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,
Select your answer:
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A. in
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Elementary schools in the United States correspond ____ primary schools in Singapore.
A. to
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