The biggest risk of a high -sodium diet is the effect_____ has on blood pressure and heart health?
问题描述:
The biggest risk of a high -sodium diet is the effect_____ has on blood pressure and heart health?
A.it B.which C.what D.that
答
it前省略了that.此句是以that引导的从句,it形式主语不可省略,所以只能选A.