相关IsthatMaryunderthetr的文学知识

问题详情：---IsthatMaryunderthetreeoverthere?---It_________her.She_________abroadforamonth.A.mustbe,hasbeenin      B.mustn’tbe,hasgoneC.can’tbe,hasbeen        D.can’tbe,hasgoneto【回答...