有关北京时间的叙述正确的是( )①北京所在经线的地方时 ②120°E经线的地方时③北京所在的东8区的地方时 ④北京所在的东8区的区时
A:①②
B:①③
C:①④
D:②④
My friends thought they had made things very smooth for me, but I felt there was still much to ________ with.