Definition: to cause a weapon to shoot bullets, arrows or missiles Level: B2
士兵向空中开了一枪。
The soldier ___fired his gun into the air.
他快速连续开了三枪。
He ___fired three shots in rapid succession.
警卫毫无预兆地开始向入侵者开火。
Without warning, the guard started ___fireing at the intruders.
