阿摩線上測驗
38. A: Stella's ballet performance was terrific.
B: ________？
A: Since she was seven.
(A)How old do people start learning ballet
(B)How long has she been learning ballet
(C)How often did she practice ballet
(D)How much will you pay for a ballet show
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統計： A(32), B(236), C(18), D(5), E(0) #3712808
統計： A(32), B(236), C(18), D(5), E(0) #3712808
