26. That warmhearted woman often helps ______ is in trouble.

27. That’s the woman one of __________ daughters works as an engineer in the US.

That is the man________house burned down in the fire.

A．who                                                   B．whom  

C．that                                                    D．whose

That is the writer_______ a lot of books were written.?

A.by whom　　　　　 B.who　　　　　　　　 C.whose　　　　　　 D.whom?

That is the very man ________ house was burned down last week.

1. A.
   his
2. B.
   whose
3. C.
   which
4. D.
   of whom