So far, he must have achieved his goal, ？A.mustn’t he

So far, he must have achieved his goal, ？A.mustn’t he
B.didn’t he
C.hasn’t he
D.doesn’t he答案：C难度：1知识点：词汇与结构部分\大学英语A\结构A\结构A
A.mustn’t he
B.didn’t he
C.hasn’t he
D.doesn’t he
正确答案：C
解析:词汇与结构部分\大学英语A\结构A\结构A