十万火急的英语问题itisnot()tohearthefirealarm,andthentosee,secondslater,menhurryingfromallpartsofthetown,incars,onbikes,onfootmenthedirectionofthefirsatation为什么写unusual?而不是usual?

Question

十万火急的英语问题
it is not ()to hear the fire alarm ,and then to see,seconds later,men hurrying from all parts of the town ,in cars,on bikes,on foot men the direction of the fir satation
为什么写unusual?而不是usual?

Answer 1

说明那块地方一直发生火灾啊 大家逃难都满整齐的啊
所以听见fire alarm 不算不平常的事 (it is not unsual)