555.i am very glad ____ you here today.Nice day.
a.to meet b.to have meet c.having d.meeting
答案Ｂ，但是glad to meet you 一般是见面时说
glad meeting you 一般是交谈结束 告别是说，这句话，是什么时候发生的．我认为Ｄ也可以？

５５８．he is as changeable as Moon;he is srue to change his mind at the last minute.翻译下？

５４８．good to see you again.i ____ i ____ not see you here today.
a.thought,could b.thought,can c.think,can d.think, could 答案是Ａ，但是我觉得Ｂ也对，帮助分析下，不是过去认为现在看不到了吗？

555.i am very glad ____ you here today.Nice day.
a.to meet b.to have meet c.having d.meeting
答案Ｂ，但是glad to meet you 一般是见面时说
glad meeting you 一般是交谈结束 告别是说，这句话，是什么时候发生的．我认为Ｄ也可以？
答：只能选B,因为不定式的动作发生在谓语动作之前，所以用不定式的完成式。因为后面是个不定时，不能选D.因为D是动名词
be glad to do sth是固定搭配，不能说成be glad doing sth。
如果句子改一上，主语用改it,则选D，如：it is very nice meeting you here today.

５５８．he is as changeable as Moon;he is srue to change his mind at the last minute.翻译下？
答：他像月亮一样的善变，最后时候他一定会改变主意。

５４８．good to see you again.i ____ i ____ not see you here today.
a.thought,could b.thought,can c.think,can d.think, could 答案是Ａ，但是我觉得Ｂ也对，帮助分析下，不是过去认为现在看不到了吗？
只能选A，要注意主句与从句时态的一致性，如果主句是过去时，从句的动作哪怕是现在发生的，也要用过去时与主句保持一致。