—Excuse me, how long can I keep the book?

—You can return it by the end of this month.

我们中学生在培养自理能力时，应该（）
①掌握一些必要的生活技能  ②克服依赖心理
③寻找独立锻炼的机会        ④需要父母的帮助

—What will the phone            ?               

—The same as you said, eight hundred dollars each.

—Sorry, I can't make it. Will three o'clock be OK?