His work ______ new ground in the treatment of cancer. It is now giving many cancer victims hope of complete recovery.

His work ______ new ground in the treatment of cancer. It is now giving many cancer victims hope of complete recovery.

A. broke

B. found

C. dug

D. uncovered
Xem đáp án
A là đáp án đúng
Lời giải:
break (the) new ground: đề xuất sáng kiến cải tiến