(2013·安徽师大附中高三七模)Don't use water to put out the fire if oil catches fire. As is known, oil _______

(2013·安徽师大附中高三七模)Don't use water to put out the fire if oil catches fire. As is known, oil ________ float on water.

#62449

shall

must

may

will

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We ________ like to thank the honest boy.

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was

could

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