In which sentence is all PUNCTIUATION correct?

Helen isn’t here. She… ........... from her dental appointment yet.

I wouldn't have bought a Chinese car if I....................... they were unreliable.

Which one of the underlined words or phrases is INCORRECT Tom and Adam went to play tennis at the sports club hours ago,…

All of your travel plans have been made. When you arrive, someone ...... for you at the airport.

In which sentence is all PUNCTUATION correct?