In some of these sentences you can use which or that; in others, only which is possible. Cross out that if it is possible.
The office (which/that) I’m using at the moment is very small.
She told me her address (which/that) I wrote down on a piece of paper.
Jane works for a company (which/that) makes shoes. Both possible.
Colin told me about his new job, which he’s enjoying very much.
My office which is on the second floor of the building is very small.
The office (which/that) I’m using at the moment is very small. Both possible.
She told me her address which I wrote down on a piece of paper.
There are some words (which/that) are very difficult to translate. Both possible.
The sun which is one of millions of stars in the universe provides us with heat and light.