— 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.

— 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

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

    --I can see that, only a few mistakes he made in this exam.

    A. he worked                        B. did he work

    C. he has worked                     D. has he worked

—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 make

C.he has worked; he made           D. has he worked; he made

— 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