— So hard in the past few months that he has made great progress in English. — I can see

问题补充：

— So hard in the past few months that he has made great progress in English.

— I can see that; only a few mistakes in the exam.

A. has he worked; did he make

B. he has worked; did he made

C. he has worked; he made

D. has he worked; he made

答案：

A. has he worked; did he make

B. he has worked; did he made

C. he has worked; he made

(答案→)D. has he worked; he made

解析：so…that放在句首时，so后的句子用部分倒装，that后的句子不用倒装；only+副词/介词短语/从句，放在句首时，用部分倒装，但是only+名词做的是主语或宾语时不用倒装，故选D。