I find it hard _____ (talk) with the old man.
问题描述：
I find it hard _____ (talk) with the old man.
答
to talk
可考察it 引导的形式主语的句型
sb.find /belive /feel..... +adj.+to do (不定式)
答
I find it hard ___to talk__ (talk) with the old man.
答
to talk
答
to talk
find it adj。to do