ESL: "It"
It's a day off for me today. It's Saturday. It's humid and muggy today. It's about 20 degrees Celsius.
This is Roy Thomson Hall in Toronto. It's a concert hall.
Roy Thomson was a businessman from Toronto and he owned a lot of newspapers.
This blog is mainly to explain a different English language expression every day. Sometimes I post other stuff. I also have a YouTube channel which is mostly about computer software: https://www.youtube.com/englishspacedog