英语单选题初三9.can i come this afternoon or tomorrow morning?( )is

英语单选题初三
9.can i come this afternoon or tomorrow morning?( )is ok .I am free today and tomorrow a either b neither c both d other (a)为什么不是c?
10.could we see each other at 9oclock tomorrow morning.sorry let's make it ( )time
a other's b the other c another d other（c）为什么不是d呀 我们定在其他的时间吧