№1 2)...her......her name 3) ...know them....don't remember there names
4) ..know you but I don't remember your name.
#2 2),,,him in his ... 3) them in there ... 4) to stay with me in my house
5) she invited us to stay with her in her house 6) to stay with you in your house
#3. 2) my...hers 3) his...him mine 4) our...us theirs 5) her ....he gave her his 6) your....we gave you ours 7) their...you gave them yours
#4. 2) them? 3) him? 4) our? 5) yours? 6) us?
#5) 2) it to him