题干
—What are you going to do this weekend?
—________. If time permits, I may go to Shanghai with my friends.
A：Up to you
B：It depends
C：Forget it
D：Never mind
答案(点此获取答案解析）
B
+1=x，□处在印刷时被油墨盖住了，查后面的答案知这个方程的解是x=﹣2，那么□处应该是数字（ ）