18. He sat still in front of the TV, _____ by the news of the violent attack on the United States Capitol.
(A) shocked
(B) been shocked
(C) having shocked
(D) to have been shocked
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統計: A(1772), B(564), C(628), D(199), E(0) #2761345
統計: A(1772), B(564), C(628), D(199), E(0) #2761345