fill in the blanks with the Over,UP,Out,In,or On.thanks!
1.the light in my room was ___ when I got home yesterday evening,but nobody was ___.
2.I looked ___ and saw him standing ___ front of me.
3.Xiao wang called ___ to us,"Hey,comrades!come ___ and join us."
4.I can't answer the question rihgt now.let me think it ___.