—Was the boy saved? —No. The doctors tried their best, _____ they failed. [ ]A. and B. or C. but D.
[ ]
题目简介
—Was the boy saved? —No. The doctors tried their best, _____ they failed. [ ]A. and B. or C. but D.
题目详情
—No. The doctors tried their best, _____ they failed.
[ ]
B. or
C. but
D. so
答案