27. The key to maintaining a healthy weight is to count the calories we eat against the calories we __________. (A) blink (B) concede (C) expend (D) elucidate

31. A teacher first models how to complete a task and then guides students through the task step by step. Later, the teacher gradually reduces support as students become more confident. What is the teacher mainly doing? (A) Increasing student motivation. (B) Encouraging independent learning. (C) Providing detailed feedback after task completion. (D) Applying scaffolding.

27. The key to maintaining a healthy weight is to count the calories we eat against the calories we
__________.

(A) blink
(B) concede
(C) expend
(D) elucidate

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