The old man,together with his two dogs,___ walking ___ the river.The old man,together with his two dogs,___ walking ___ the river.A.are,alongB.is,alongC.are,aloneD.is,alone------------------------------------------------------------------------------

Question

The old man,together with his two dogs,___ walking ___ the river.
The old man,together with his two dogs,___ walking ___ the river.
A.are,along
B.is,along
C.are,alone
D.is,alone
-----------------------------------------------------------------------------------------------------------
我觉得应该是C或D,但是到底视为单数（整体）还是复数?

Answer 1

B正确,主语由with连接时谓语动词由with前的主语决定.
后面用along表示沿着河.alone意为单独,独自