题目内容
The need for sleep varies__________from person to person.
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I would appreciate__________greatly if you could give me a three-day leave.
Five pilots landed J-15 fighter jets on the Liaoning,China′s first aircraft carrier__the critics,who once described it as a shark without teeth．
When a student said in class,'I come home at 6 o′clock yesterday',the teacher said'Came not come'.Which rule of effective feedback does the teacher NOT obey？
To assess how well a student is performing relative to his or her own previous performance,a teacher should use_________assessment.
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