19.
(A) The students all enjoyed her demonstration
(B) She felt confident in her teaching skills
(C) Although there were a few small mistakes
(D) Lectures ensure students absorb materials
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統計: A(58), B(11), C(52), D(6), E(0) #3315078
統計: A(58), B(11), C(52), D(6), E(0) #3315078