—Are you satisfied with the answer?—Not at all. It couldn't have been .A. worseB. so badC.

问题补充：

—Are you satisfied with the answer?

—Not at all. It couldn have been .

A. worse

B. so bad

C. better

D. the worst

答案：

(答案→)A. worse

B. so bad

C. better

D. the worst

解析：考查情景交际。句意：--你对答案满意吗？--一点也不。这个答案不能再差了。Can’t/couldn’t与本基金连用，表示最高级含义，It couldn be better不能再好了；It couldn be worse不能再差了。根据答语可知，“我”对答案不满意，故选A。