12. There are over 100 _____ of maple trees. Make sure you know which one you want before you order your tree.
(A) corners
(B) linkages
(C)species
(D) benches
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統計: A(132), B(161), C(1189), D(281), E(0) #2899192
統計: A(132), B(161), C(1189), D(281), E(0) #2899192