Question

【题目】【2016海南】They solved the problem in the end. Yet I really don’t know ________.

A.how did they make it

B. how they made it

C. why did they make it

Answer 1

【答案】B

【解析】

试题分析：句意：他们最后解决了这个问题，然而我真地不知道他们怎样解决的。宾语从句应该用陈述语序，故排除AC；故选B。