阿摩線上測驗
21. The color of Helen’s bicycle is much brighter than _______.
(A) her sister
(B) her sister’s
(C) that of her sister
(D) that of her sister’s
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統計： A(10), B(82), C(12), D(39), E(0) #2495170
統計： A(10), B(82), C(12), D(39), E(0) #2495170
