I do believe that swim across the river, but, in that situation, I do that.
A. am able; couldn’t
B. could; was able to
C. was quite able to; couldn’t
D. couldn’t was able to
网友回答
A. am able; couldn’t
B. could; was able to
(答案→)C. was quite able to; couldn’t
D. couldn’t was able to
解析：可联系答.案.网客服索取。