Tom learned to drive when he was nineteen. => Tom has
Giải thích
Đápán: Tom has been able to drive since he was nineteen.
Giảithích: S + studied/learned + to V-inf + when + S + V = S + have/has + been + able + to V-inf + since + S + V: ai đóđãhọc/cóthểlàmgìtừkhinào
Dịch: Tom đãcóthểláixetừkhianhấymườichíntuổi.