----How about your trip to Hainan?----It couldn’t have been . Sometimes I went swimming in

问题补充：

----How about your trip to Hainan?

----It couldn’t have been . Sometimes I went swimming in the sea; sometimes I lay on the sand.

A. so well

B. as bad

C. better

D. worse

答案：

A. so well

B. as bad

(答案→)C. better

D. worse

解析：此处是用比较级的否定式表达最高级的含义。从下文可知意为“不可能更好了”。