The researchers __________work in Africa learn a lot about early humans and animals.
who
The site is really interesting. John sent me to the site.
John sent me a site, which is really interesting.
They found remains of a river monster in a place _______ there’s no water today.
where
The man lives next door to me. He designs websites
The man, who lives next door to me, designs websites.
You need to be careful when you swim in the ________ oceans great white sharks live.
where
Paul took us to the park. He plays football there.
Paul took us to the park where he plays football.
The photographer ________ job it is to capture shots of giant trees must have all the necessary equipment.
whose
The photo is not clear. Tom posted the photo on Facebook.
The photo, which Tom posted on FB, is not clear.
The information about the discovery was published in a book ________ was written in 1900.
that/which
I remember the day. You became my friend on Facebook that day.
I remember the day when you became my friend on Facebook.