阿摩線上測驗
44. The exercise schedule was planned so that the amount of active riding _____.
(A) increased every few days
(B) varied from day to day
(C) increased every few weeks
(D) varied from hour to hour
(E) increased until the third week and then was kept constant
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統計： A(261), B(15), C(18), D(1), E(14) #1950096
統計： A(261), B(15), C(18), D(1), E(14) #1950096
