请教一道英语题,求解,这个要怎么选After walking among the pavilions at the Expo for over six hours, the boy said to his father,"I want to visit two more pavilions ___ you're too tired."A.ifB.althoughC.unlessD.after

请教一道英语题,求解,这个要怎么选After walking among the pavilions at the Expo for over six hours, the boy said to his father,I want to visit two more pavilions ___ you're too tired.A.ifB.althoughC.unlessD.after 求解一道英语题 一道地理英语题求解 再想请教老师一道题目,求解 这个英语作业题怎么做啊,求解 这个题怎么算,求解 第一道题的极限怎么求解 还有一道阅读理解题,大家帮我看看怎么选?还有给高二的做难吗Mr.Briggs got a job with an insurance company(保险公司) after he left school and went around visiting people in their homes to sell them life insurance.One day,aft 请教一道几何题 请教一道线性代数题 请教一下这个英语的发音怎么读 求解一道高中集合数学题请教一下详细过程,谢谢! 这个作文怎么写,英语作文,求解在线等 初二英语一道填空题求解如题 求解一道英语的同义句转换题 这个题怎么简算,求解 求解一道集合题（要过程）. 求解微积分一道题