—Do you like Nack ?—Yes , Nack is good , kind , hard –working and intelligent;, I can’t sp

—Do you like Nack ?
—Yes , Nack is good , kind , hard –working and intelligent; , I can’t speak too highly of him .
A. as a result
B. in a word
C. by the way
D. on the contrary

A. as a result (答案→)B. in a word C. by the way D. on the contrary解析：前面列举了Nack的很多优良品质，最后总结道：我再怎么赞扬他也不过分。四个选项只有in a word表示概括、总结。故选B。

这个解释是对的