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

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

C. better

D. worse

解析：C

解析此处是比较级的否定式表达最高级的含义，意思是“不可能更好了”。