单项选择题

ff you don't put the milk in the refrigerator, it may ________

A．go by
B．go off
C．go on
D．go back
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单项选择题
Everything we eat and drink contains some salt; we can meet the body's need for it from natural sources without turning ________ the salt bottle.
A．up
B．to
C．on
D．over
单项选择题
She ________ the washing out in the garden because it was fine yesterday.
A．hung
B．hang
C．hanged
D．hanging
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