who, whose, whom or which?
He bought all the tools ... are required to fix his old car.
This is the doctor ... helped Sara recover from her illness.
This is the girl ... he fell in love with in Madrid
These are the kids ... parents were were arrested..
Give me the plate ... is on the table.
The criminals, two of ... managed to escape, broke into a bank.
The police identified the murderer ... fingerprints were on the knife.
I know the candidate ... I am going to support in the next elections.