为了消除________石灰的危害,应提前洗灰,使灰浆在灰坑中________两周以上。( )
— What would you like to have, meat or fish?
— _____________________.
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
— ___________________
— Once or twice a week.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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