为何选D不选A?

为何选D不选A? sat语法题求解,为何选D不选A A 和 D之间为何选D? 为何选B不选A 为何选A不选B 为何选c不选a呢 Sat语法题求解,为何选A不选C或D 英语问题33为何选D不选B 为何选D 英语问题为何选B不选A sat语法题求助,为何选E不选A sat语法题求解,为何选C不选A sat语法题求解,为何选B不选A sat语法题求解,为何选C不选A 为何选C不选A 英语问题consider He often sleeps with the door___and the window___.A.cloae; open B.closed; opened C.closing; opening; D.closed; open为何选D不选B, Make sure not to close your eyes when___A.photographed B.photographingC.taken photos D.taking photos为何选A不选C或D 为何选D,不选CAnimals’ living environments have been getting worse ___ the increase in industrial pollution.A.thanks to B.because C.as D.since