Did you say goodbye to Anna?— Yes .When I _____ to say goodbye to her, she ______ the piano.

. –Mary, is this ______ umbrella?–No, it’s not mine. It is _______.

He spoke English so well _____ by us all.

This kind of flower is ________ than that one.

Do you still remember the city ____ we visited last year ?–You mean Zhengzhou? I know there is a factory____ your mother worked.