题目

-How is Lily in the new school？ -She is doing very well．There is    to worry about． A．nothing     B．something      C．anything 答案：A一I think I saw Mr. Smith at yesterday's party.一He＿＿there. He is now on a business trip in Greece. And he left the day beforeyesterday.A. mustn't have been 　B．couldn't have been 　C. might not be 　 D. should not be