---------为加速板友们提供解答，请仿照以下范例提供足够题目资讯----------------- The employees __________ about the closure before the announcement was made public. A) know B) known C) knew D) have known Explanation 3: Choice A is the present tense form of the verb used for "now" or "everyday". (I know your name.) Choice B is the passive form of the verb. (He was known by the police.= The police knew him.) Choice D is the present perfect plural tense used for something in the past that continues in the present. (They have known her for years. =They still know her now.) The correct answer is C.The simple past tense is needed 想请问一下，为什麽答案 C 如果答案 had know before it was made public. 可以吗? --

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