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

admin2021-01-22 44

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://kaotiyun.com/show/e54K777K

大学英语三级A级

相关试题推荐

随机试题

最新回复(0)