Experiments of this kind ___in both the U．S and Europe well before the Second World War

When Lucy saw some hairs on her dad’s coat，she brushed________ off.

ould you lose so much money” Johnasked his wife, eyeing her angrily from ________ the kitchen table.

___these her erasers—-No, they ___.

63. The WTO can’t _____ its name if it doesn’t include a country that is home to one fifth of mankind.