阿摩線上測驗
12. She spends a lot of time _______ the piano every day.
(A) practice
(B) practicing
(C) to practice
(D) to practicing
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統計： A(81), B(316), C(71), D(38), E(0) #3384241
統計： A(81), B(316), C(71), D(38), E(0) #3384241
