问题
选择题
Everybody thoutht __ strange for a shy nab to ___ so many exciting things.
A．this; have done
B．; have done
C．this; do
D．it, do
答案
答案：B
第一空用it 为形式宾语，代表后面for的不定式短语；第二空根据句意。要用完成时，表明动作在 through it strange.之前已经完成。