The scientists ________ on the new medicine for two years.They will succeed in no time.A)work B) are

题目

The scientists ________ on the new medicine for two years.They will succeed in no time.A)work B) are working C) have worked D) will work A:________ will we know the results of the test?B:In a week,I suppose.A) How much B) How far C) How soon D) How long 也要具体理由.

答案

The scientists __C__have worked____ on the new medicine for two years.They will succeed in no time
     从状语for two years可见,此处用完成时
 
2.A:____C.How soon____ will we know the results of the test? 
    B:In a week,I suppose.
   从答语 In a week " 一周以后” 可见,问句应该是“还要多久.”How soon
 
 
 
请在客户端右上角评价点“满意”即可,