Do you know the _________about the writer? ———-Yes, he has _________for 2years.

─ Look, Stella is there!─ That ______ be her. She doesn’t like singing.

Do you Know _______ lady in blue? 一Yes. She is a teacher of a university.

It’s difficult to live in a foreign country, ______ if you can’t understand the language there.

I don’t think Lily can sing _______ Lucy.—I disagree. I think Lily can sing ______ Lucy.