问题补充:
单选题Onlyafterhehadspentseveralnightsworkingonthemathproblem_______towonderwhethertheproblemwaswronglyset.A.that he beganB.did he beginC.then he beganD.so that he began
答案:
B
时间:2022-05-10 07:19:50
单选题Onlyafterhehadspentseveralnightsworkingonthemathproblem_______towonderwhethertheproblemwaswronglyset.A.that he beganB.did he beginC.then he beganD.so that he began
B