If unsolved,theproblemoffoodsafetymayleadtomores...
問題詳情:
If unsolved, the problem of food safety may lead to more serious results.
A. having left B. to leave C. left D. leaving
【回答】
C
知識點:非謂語動詞
題型:選擇題
問題詳情:
If unsolved, the problem of food safety may lead to more serious results.
A. having left B. to leave C. left D. leaving
【回答】
C
知識點:非謂語動詞
題型:選擇題