______ good time they had at the party last night!
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.
May the fourth is the day __________ we Chinese people will never forget.