帮我分析一下时态填空吧.看不懂答案.

帮我分析一下时态填空吧.看不懂答案.
1.Jim is very untidy.he( ) his things all over the place.(leave).
2.normally i finish work at5:00.but this week i(am working) until 6:00 to earn a bit more money.(work).答案是进行时.不懂.
3.i can't understand why he ( ) so selfish.he isn't usually like that.(be).is been.为什么?
4.what （are）you (doing) this evening?（do） 为什么用进行时?现在还是未来?我写的will do.
5.I （am） not (doing) anything tomorrow evening?为什么不能用will do、.我写的还是将来时.错了~
6.she (is coming) to see us tomorrow.she (is travelling) by train and her train (arrives) at 10:00.i（am meeting） her at the station.(come ,travel arrive meet).更加郁闷中.我还是用的将来时.为什么答案有进行时还有一般时呢?
第一个是 提示的原型always leave 但是答案好像不是leaves。