40. What does “them” in the third paragraph refer to?
(A) Stairs.
(B) Confines.
(C) Attackers.
(D) Defenders.
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統計: A(38), B(7), C(24), D(11), E(0) #3806609
統計: A(38), B(7), C(24), D(11), E(0) #3806609