There are five circles with different colours on the flag of Olympic Games. They are green, blue, red and .
I agree ________ is good to eat lots of fruit and vegetables.
If I ________ ten years younger, I _________ piano lessons and go to a music college.
This isn’t ______ iPad, mine looks the same as ______ .
English is ________ useful language so that most people speak it as ________ second language.
You don’t know ______ I want to see you again. It’s a year since I last saw you.