英语达人进来啊，秒题请自~重

问题描述：

How glad they were ... each other again in Hongkong！
A.to see B.see C.seeing D. seen
答案a，可以说原因么？

问题解答：

be glad to do sth.

句子转换成陈述语气是They were very glad to see each other again in Hongkong!

感叹句句式
1. How glad they were + to do sth

这里用的感叹句，我们可以把句子还原为：They were glad to see each other.这里要突出的是glad,感叹句结构：How+形容词/副词+主语+谓语；What a/an +形容词＋可数名词单数＋主＋谓

这是一个简单的语法。
were to do something 是将来虚拟语气

表明现在的愿望。

我尝试一下哦，，放下英语很多年了。。

这是一个感叹句，动词“were”表过去，
比较How glad they were！和They were glad to see each other again in Hongkong.原句中的“to see each other again in Hongkong”是不定式做状语，表原因。

翻译成中文：能在香港遇见，他们很是高兴。

A.to see 还原了看就很清楚了they were glad to see each other again in Hongkong