懂高中英语的人进
1Theyalwaysgivetheavailableseatsto______comesfirst.Afterall,theearlybirdcatchestheworm.AwhomBwhoCwhomeverDwhoever
2Igotothesupermarket_____threeorfourdays.AeachBallCeveryDboth
3WhyareyoustillworkingonthisprojectIt's4o'clockintheafternoonandyou'resupposeditbynoon.
AtofinishBtobefinishingCtohavefinishedDTohavebeenfinishing
4___________notwaitforhim.Wewouldratherwe____therewithouthim.Abetter;wentBDo;willgoCHadbetter;wentDBetter;shouldgo
CCCA请解释一下这样选的原因,