The man in a black suit _______ be our youth worker. — I’m sure it _____ be him. I saw him in the laboratory building some minutes ago.

I fell in love_______ the beautiful city of Ningbo while I was_______vacation there. [ ]

Mary is the _________ child of her parents.

It is reported that two schools, ___ ___ are being built in my hometown, will open next year.

I_______ watch Happy Goat and Big Big Wolf because I don’t think it’s so interesting.