Combine to make sentences
Now find a person (what kind of person). His or her name begins with the letter Z. (use whose)

What kind of a person is her husband?

Combine to make sentences Find a word (what kind of word?). It begins with the letter Z. (usewhich or that).

Combine to make sentences Then go to a place (what place?). There are no people whose name begins with Z in that place. (usewhere)

Combine to make sentences This is the bus (what kind of bus?) It goes to Agra. (use which orthat)