单项选择题

If a substance is dissolved in water or heated, it may ______ a gas. A give into B. give over C. give off D. give away
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单项选择题
Only ten to twenty percent of cold viruses are transmitted by carriers, who, sneezing and coughing, ______ the viruses into the air.
A．spray
B．sprinkle
C．spread
D．sprout
单项选择题
That summer I drove west with a friend, and we ______ a little money doing odd jobs and as much as possible visited his relatives.
A．picked up
B．stepped up
C．put aside
D．set aside
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