Have you ever _____there before ? Yes ,I ______there with my parents last year .
Nobody ____ the answer now.
I have some problems with my English writing. Can you give me some_____?
— Whose pen is this? — Oh, it’s_____. I was looking for it everywhere.
The 18th National Congress of the CPC has been one of______things in our life recently.
—_____is your mother ? —A nurse. She works in a hospital.