阿摩線上測驗
17. In some states of the US, teenagers are allowed _____ how to drive when they turn 16.
(A) learning
(B) to learn
(C) to have learned
(D) to be learned
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統計： A(37), B(219), C(6), D(9), E(0) #3235473
統計： A(37), B(219), C(6), D(9), E(0) #3235473
