Youshouldtrytowrite__________evenwhenyou’rebusy.Asyouknow,practicemakesperfect.
Wherewas__________youmetwiththefamousscientist?
Ourteacher__________ustopractiseourspokenEnglishasoftenaspossible.
行情变化最明显的反应是（）
__________twenty-fifthofDecemberis__________ChristmasDay.
