Unluckily, we missed the train. we    early.

You _______ have told her the bad news last night, because she wouldn’t handle it peacefully.

The lady in the sitting room           be over sixty. She looks so young.

— What are you going to do this weekend?— I don’t know. I ______ visit a friend.

－Look, your sister is playing the piano over there.－She ______ be my sister. She has gone to America.