3. Exercising at least three times a week is strongly _______ by doctors.
(A) rehearsed
(B) reproduced
(C) rescheduled
(D) recommended
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統計: A(27), B(14), C(15), D(605), E(0) #2199387
統計: A(27), B(14), C(15), D(605), E(0) #2199387