Which are the parenthetical words in each sentence?

Tick the correct answer.

Tim, my friend from art school, has a great sense of humour.

• Tim
• my friend from art school
• has a great sense of humour

She is very smart — or so it seems.

• She is very smart
• or so it seems

Ben, as everyone knows, has invented a new way of recycling litter.

• Ben
• as everyone knows
• has invented a new way of recycling litter