Question

这道题怎么做？请写清楚做法和运用的知识点。

Answer 1

【2013新课标II卷】6. Since nobody gave him any help, he have done the research on his own.
A. can B. must C. would D. need
【答案】B
【解析】考查情态动词。根据句意，由于没人帮他，因此他定是一个人做的那个调查。情态动词must表肯定推测。故选B。