.It's the second time you 　　　　　　　late this week.

Had they known what was coming next, they　　　 second thoughts.

A. may have                            B. could have    

C. must have had                   D. might have had

The pair of shoes                 worn out.

--Need I finish the work by five this afternoon?

--Yes, you ________.

[　　]

Put on your coat！I______　you down to the doctor.

A．take           B．took           C．have taken      D．am taking