The director of Jokers Hill says the property promises to be one of North American leading field research stations.
AThe director
Bpromises
CNorth American正確答案
Dfield
答案與詳解
為什麼答案是 C
North American 為形容詞，此處應改為名詞所有格 North America's，以修飾後方的 leading field research stations，表示北美洲的。
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