SorrybutIcan的精选

问题详情：--Sorry,butIcan’tgoonafieldtripwithyouthisweekend.Ihavetotakepianolessons.  ---_______Wecouldhavefuntogether.      A.Whatashame!  B.Goodluck!  C.Don’tmentionit.D.Idon’tthinkso....