Smoking （know）_____to increase a person’s risk of developing lung cancer.is know

游客2024-06-19 25

问题 Smoking （know）_____to increase a person’s risk of developing lung cancer.

选项

答案 is known

解析 smoking与know之间是被动关系,所以用被动语态is known。

转载请注明原文地址:https://tihaiku.com/zcyy/3641413.html

相关试题推荐

随机试题

最新回复(0)