If the machine makes a mistake — ____ rarely happens– it gives a warning in the form of a red light.

1I often goswimming with my father______Sunday.

city in Zhejiang Province, located on the river’supper reaches, is believed to be ______ source of the dead pigs.

The song yesterday once more________the old days and the love of family.— Sure. It’s my favorite song.

Please_______the painting on the wall and _______the washing machine later.