求助一道高中英语冠词题ItisaheateddiscussionamongexpertswhetherweshouldchangethedatefortheCollegeEntranceExaminationinto_____SaturdayandSundayofthefirstweekofJune,whichIthinkis_____goodadvice.A.a;/B.the;the

求助一道高中英语冠词题

ItisaheateddiscussionamongexpertswhetherweshouldchangethedatefortheCollegeEntranceExaminationinto_____SaturdayandSundayofthefirstweekofJune,whichIthinkis_____goodadvice.

A.a;/

B.the;the

C.the;a

D.the;/

答案选D……第一个空是怎么选出来的?