Don’t eat too much junk food and do more exercise, you’re sure to keep fit .A. by acciden

Don’t eat too much junk food and do more exercise, you’re sure to keep fit .
A. by accident
B. by mistake
C. in this way
D. in fact

A. by accidentB. by mistake(答案→)C. in this wayD. in fact解析：根据题干，本句的意思是“不要吃太多垃圾食品，要做更多的运动，这样你一定会保持健康。”四个选项的意思分别是：by accident是“偶然”，by mistakes是“错误的”，in this way是“通过这种方式”，in fact是“实际上”。所以本题选C。。

就是这个解释