问题
选择题
We have made ______ great progress in the medical field, but ______ progress we have made is not enough.
[ ]
A. a; a
B. a; the
C. /; the
D. /; /
答案
答案：C
搜题请搜索小程序“爱下问搜题”
We have made ______ great progress in the medical field, but ______ progress we have made is not enough.
[ ]
A. a; a
B. a; the
C. /; the
D. /; /
答案：C