—Do you know ______ second-hand smoke? —To protect our health. A. how we should prevent B. where sho...
2022-09-22 15:00:36 163次 湖南省2019届九年级下学期期中英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
—Do you know ______ second-hand smoke?
—To protect our health.
A. how we should prevent B. where should we prevent
C. why we should prevent D. where we should prevent
本题链接：
