2008 Tianjin Question 1 Single-choice Differentiating 2008_天津卷 (英语) 1. We’$ll have a picnic in the park this Sunday _____ it rains or it$’s very cold. A. sinceB. ifC. unlessD. until Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →