If unsolved,theproblemoffoodsafetymayleadtomores...
问题详情:
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
知识点:非谓语动词
题型:选择题
问题详情:
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
知识点:非谓语动词
题型:选择题