问题
单项选择题
You ______ include this section. It's not necessary.
A.wouldn't
B.couldn't
C.don't need
D.don't have to
答案
参考答案:D
解析:don't have to“不必”;如果用need,则应是you don't need to...(need是实义动词),或you needn't include...(need是情态动词)。