The dog (a)   barked all night belongs to my neighbor.

The woman (a)   you spoke to is my aunt.

This is the house (a)   was built in 1920.

The girl (a)   father is a famous musician is in my class.

I have a friend (a)   loves reading historical novels.

The car (a)   I bought last month is already having problems.

Do you know the person (a)   called earlier?

The professor (a)   lecture we attended was very knowledgeable.

The company (a)   created this app is based in London.