John as well as the other children who　　　　 no parents　　 good care of in the center.

A.have;is being taken　　　　　　　　　 B.have;has taken

C.has;is taken　　　　　　　　　　　　 D.has;have been taken

Has John set out for New York yet?

Yes. I _________ at the airport.

A. have seen him off 　　　　　　　　　　 B. saw him off 　

C. see him off 　　　　　　　　　　　 D. had seen him off

—Can I help you, Madam?

— No, thanks. I_______.

A. have just looked around　　　　　　　　　　　 B. just look around

C. just looked around　　　　　　　　　　　　　 D. am just looking around

—Do you think we should accept that offer??

—Yes， we should， for we　　　　 such bad luck up till now， and time　　　　 out.

A.have had;is running　　　　　　　　　　　　 B.had;is running?　　　

C.have;has been run　　　　　　　　　　　　　 D.have had;has been run

　　　　　 and I’ll get the work finished.?

A.Have one more hour?　 B.One more hour?　

C.Given one more hour?D.If I have one more hour