— Are you pleased with what he has done?— It couldn’t be . He must have put a lot of effo

问题补充：

— Are you pleased with what he has done?

— It couldn’t be . He must have put a lot of effort into his work.

A. any worse

B. any better

C. so bad

D. the best

答案：

A. any worse

(答案→)B. any better

C. so bad

D. the best

解析：考查否定词与比较级连用表示最高级含义。句意：你对他做的事情满意吗？没有比他做的更好的了。他一定在工作中投入了许多努力。故选B。