What he said ____ a great effect upon us.A.have B.does have C.having D.to have为什么选B?这个是强调吗,选A为什么不行?

What he said ____ a great effect upon us.A.have B.does have C.having D.to have为什么选B?这个是强调吗,选A为什么不行?
What he said ____ a great effect upon us.
A.have B.does have C.having D.to have
为什么选B?这个是强调吗,选A为什么不行?

What he said ____ a great effect upon us.A.have B.does have C.having D.to have为什么选B?这个是强调吗,选A为什么不行?
B
他说的话对我们影响很大.
what he said为从句做主语,等同于第三人称单数形式.
does have是用助动词表示强调,因为主语为三单形式,所以助动词用does.