首页
›
答案
›
题库
›
慕课
›
未分类
There are three primary auxiliaries: “be”, “do”, and “（）”.
There are three primary auxiliaries: “be”, “do”, and “（）”.
A.have
B.had
C.has
D.does
正确答案：have
标签：
英语语法
上一条：
A simple verb phrase consists of a(n) （） only.
下一条：
There is no hard-and-fast distinction between dynamic and stative verbs.