The Greens ( ) busy during the week.

问题描述:

The Greens ( ) busy during the week.
A.is usually B.uaually is
C.are usually D.usually are
请附加上应该是用 be usually 还是 usually be 的情况,

C
像usually这种表示频率的副词
习惯上位于be动词、助动词等之后,行为动词之前
eg:
She is sometimes very busy.
I will never forget this lesson.顺便请教一下,行为动词是不是就是如runjump一类的词?
如不是,请举例,感谢!!正确!