They_____thebattlebutlostmanymen . [ ]

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

_____ you sing a song—Yes, I can.

More teens are smoking in Beijing, ______ the number of primary and middle school students picking up the habit has more than doubled from previous years.

Mary’s Christmas present was made ___ glass. Her mother made it ____ hand.