—What should we do to prevent H7N9 bird flu? —We must from crowded places.
---I think you should phone Jenny and say sorry to her. ---________. It was her fault.
---Do you know ________ this afternoon? ---I’m not sure, but I’ll tell you as soon as she ________.
---Look at the machine in the corner. I haven’t seen it before. ---It ________ examining the patient.
---________ tall the red building is! ---Yes, it’s our new library.
---Your city looks beautiful. ---Yes. Lots of trees and grass ________ last year.