阿摩線上測驗
19. Observations were made _______ the children at the beginning and at the end of pre-school and first grade.
(A) towards
(B) of
(C) on
(D) with
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統計： A(0), B(0), C(1), D(0), E(0) #3355096
統計： A(0), B(0), C(1), D(0), E(0) #3355096
