_________ the animals _________ our duty.
— Does your sister ______ a new schoolbag (新书包)? — No, she doesn’t.
— ______ are you from? — I’m from Shanghai.
—How old are you? —_______ .
—What’s this _____ English? —It’s _____ orange.
—What are ______ over there(那边)? —______ are buses.