单选题 Ally and Steven's eldest child enjoys after-school program very much.
【正确答案】 B
【答案解析】[解析] 文章说的是Lily很喜欢放学后的活动(Lily is having a great time in her after school program.),而Lily是6岁,最小的孩子。Josh才是the eldest child,他12岁,所以应该选[B]。