【简答题】完形填空。 Lightning flashed through the darkness over Sibson's bedroom skylight (天窗). Sibson was shaken by a clap of thunder _1 _ he knew what was happening. The storm had moved directly _ 2 _ his two-sto...
【简答题】完形填空。 Thousands of years ago, people did not know 1 to make a fire. When it was very 2 at night, they could not sleep well. Sometimes lightning hit (打, 击) a 3 and started a fire. At first people were ...