---So hard_ in the past few months that he has made great progress in English.
---I can see that, only a few mistakes in this exam.
A. has he worked; did he make
B. he has worked; he made
C. he has worked; has he made
D. has he worked; he made
网友回答
A. has he worked; did he make
B. he has worked; he made
C. he has worked; has he made
(答案→)D. has he worked; he made
解析：可联系答.案.网客服索取。