4. _______ many desirable qualities which make it a commercially very useful metal.
(A) Aluminum has
(B) That aluminum has
(C) Aluminum having
(D) Aluminum to have
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統計: A(647), B(101), C(71), D(26), E(0) #1258241
統計: A(647), B(101), C(71), D(26), E(0) #1258241