( )How many brothers______Mary______?A.did;has B.do;have C.does;have D;does;has这题该怎么选择?方法!

问题描述:

( )How many brothers______Mary______?A.did;has B.do;have C.does;have D;does;has
这题该怎么选择?方法!

c 助动词DO/DID/ DOES 后动词要用原形,故排除A与D,主语是Mary 第三人称单数,用does,再排除B