题干
It's so dark and cold outside. You'd better _______ now.
A：go out
B：don't go out
C：not go out
答案(点此获取答案解析）
C
It's so dark and cold outside. You'd better _______ now.
A：go out
B：don't go out
C：not go out
张，依题意可列出一元一次方程是（ ）