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—Two hundred of the tourists were saved from danger in Taiwa

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—Two hundred of the tourists were saved from danger in Taiwan, but the rest ______ still missing.
— If only the travel agency ________ more measures to prevent such accidents.
A.is; has taken B.are; had taken
C.is; took D.are; would take
—Two hundred of the tourists were saved from danger in Taiwa
B

第一空考查主谓一致,the rest做主语,谓语和the rest修饰的名词决定,这句话指的是tourists,用are,第二空考查虚拟语气,If only+宾语从句,从句中的谓语用相应的过去时,这句话指的是旅行社过去要采取措施就好了,用过去完成时。选B。