Where were you at eleven o’clock this morning—I ________ beef with my father at home at that time.

Would you like to come to my party on Saturday， Sam—-I’d love to， ____ I can’t . I have to take a piano lesson.

Mr Black________ Shanghai in a few days Do you know when the earliest plane ________on Sunday

Rubbish _______ to produce electricity after this kind of new machine is invited. [ ]

If ___for the job, you’ll be informed soon.