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The internet service provider requests that subscribers _________ certain that their systems are protected with a reliable anti-virus.
(A) made
(B) making
(C) make
(D) to make

(舊)TOEIC(Test of English for International Communication)- 文法-3#10636

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最佳解!
	titan_cbk 小三下 (2014/01/18) request that subscribers (should).....看完整詳解檢舉

杜伯庸國二下 (2015/04/15)
對耶

情態動詞 recommend advise.. 之類好像都要should V

一時疏忽了

檢舉

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