The computer ________ John's sister.

[　　]

Here are the farmers ________ discovered the underground city last month.

[　　]

Those ________ test paper should be corrected must stay in the classroom.

[　　]

Recently I bought an ancient Chinese vase, __________ was very reasonable．

[　　]

It's impolite to laugh at the people who are __________.

［　　］

He is loyal to the leader of the committee, so in this election he voted _________ his leader again.

[　　]

Do you know the factory, _________ products are _________ high quality.

［　　］

The doctor __________ she sent her friend is very well known.

［　　］

This was the place __________.

［　　］

Is this the restaurant ___________?

［　　］