一Is Mr. Wang at home I have something important to tell him.一No, he isn’t . He America. He will come back in a week.

－Please look ________ the pictures above and answer my questions.－Yes, sir.

David， is that man your Chinese teacher— It ___________ be him. He’s having a meeting.

I am ______ about the new model, and I firmly believe that there will be a good market for it.

The data shows ________ successful peoplehave in common is ________ they have perseverance