Question

【题目】The famous player tried again and again after each failure. That’s _____ he succeeded at last.

A. what B. when

C. whether D. why

Answer 1

【答案】D

【解析】考查表语从句连接词。句意：在每次失败后，这位著名的球员一次又一次地尝试。那就是他为什么最后会成功。be动词后面是一个表语从句，根据前文的tried again and again after each failure可知，空格处填why，前文是he succeeded at last的原因，故选D。