[ Grammar ]
_______ by Peter’s project, the teacher gave him the highest mark.
A. Impressed
B. having impressed
C. Impressing
D. Having been impressing
Select your answer:

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The recycling program was efficient. It significantly reduced waste in landfills.
A. The recycling program was so ineffective that waste in landfills increased.
B. The recycling program was so efficient that it significantly reduced waste in landfills.
C. The recycling program was so ineffective that it increased waste in landfills.
D. The recycling program was so poorly managed that it had no impact on landfill waste.
