So diffcultit to fit in at school that she decided to drop out.A. found sheBdid she fin

问题补充：

So diffcultit to fit in at school that she decided to drop out.

A. found she

Bdid she find

Cshe found

Dshe did found

答案：

A. found she

(答案→)B. did she find

C. she found

D. she did found

解析：考察倒装句。So+adj/adv放在句首的时候，后面使用部分倒装的形式，把助动词提到主语前，构成部分倒装。故B正确。句意：她发现适应学校是如此的困难以至于她决定离开学校。