It seems necessary for these newcomers to have some__________at this stage for their better understanding of the new subject.
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Lydia was very_____________of her twin sister gооd аchiеvеmеnts in ѕсhооl, аnd decided to catch up with her.
Children are sensitive to disapproval and_________their behaviour accordingly.
I lived deep in the country, without easy_________to shops.
灭火器灭火时,灭火器的喷射口应该对准火焰的( )。
A. 上部
B. 中部
C. 根部