（ ） I didn't know ____ and ____?A.what's his name ; how old he isB.what his name was ; how old he wasC.what his name is ; how is the oldD.that was his name ; he was how old求正确答案和解析.

（ ） I didn't know ____ and ____?A.what's his name ; how old he isB.what his name was ; how old he wasC.what his name is ; how is the oldD.that was his name ; he was how old求正确答案和解析.
（ ） I didn't know ____ and ____?
A.what's his name ; how old he is
B.what his name was ; how old he was
C.what his name is ; how is the old
D.that was his name ; he was how old
求正确答案和解析.

（ ） I didn't know ____ and ____?A.what's his name ; how old he isB.what his name was ; how old he wasC.what his name is ; how is the oldD.that was his name ; he was how old求正确答案和解析.
B.从句用陈述语序,主句是过去时,从句也要用过去时.

b 后面是宾语从句，要用陈述语序，并且时态要一致