I have seen very little of Calvin recently.how's she going?She was happier than she----when I saw here the other day.had been wasis has beenI showed the students some pictures in class which I thought would----their understanding of the text.deepen lencthenwiden fasten
问题描述：
I have seen very little of Calvin recently.how's she going?
She was happier than she----when I saw here the other day.
had been was
is has been
I showed the students some pictures in class which I thought would----their understanding of the text.
deepen lencthen
widen fasten
答
第一题选had been.关键是She was...,一般过去时,这里的宾语从句应该用过去完成时.（那个时候）她很幸福,比（在那之前）的任何时候都幸福.
第二题选deepen,deep（深的）的动词形式,understanding(理解)当然应该用deepen（加深）理解啦!