7. The hikers felt their energy sapped by the oppressive summer heat, which seemed to _______ them well before they could reach the summit.
(A) enervate
(B) elongate
(C) implicate
(D) retaliate
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統計: A(17), B(2), C(2), D(2), E(0) #3432754
統計: A(17), B(2), C(2), D(2), E(0) #3432754