So much progress in the past few months that she now has no difficulty in making herself

问题补充：

So much progress in the past few months that she now has no difficulty in making herself understood in English.

A. did she make

B. has she made

C. she has made

D. she made

答案：

A. did she make

(答案→)B. has she made

C. she has made

D. she made

解析：考查倒装句。当so/such引导的短语放在句首的时候，谓语动词使用部分倒装的形式。根据in the past few months说明使用现在完成时，故B正确。