Question

I find ____ difficult to remember everything, though I’m still young.

A．that

B．this

C．it

D．one

Answer 1

C

考查宾语补足语。句意“我觉得记住所有的事情很难，尽管我还年轻。”it作find的形式宾语，真正的宾语是动词不定式（to do）；difficult是宾语补足语，修饰it。故选C。