水果店卖出橘子35筐，香蕉28筐，橘子和香蕉每筐都是48千克。根据下列算式补相应的问题：48×35+48×28：____。
写出下列名词的复数形式。
①May I have some ____ (plum), please? Sure.
②There are seven ____ (boy) in the playground.
③The woman has two ____ (baby).
④How many ____ (peach)? There is only one.
⑤There are two ____ (library) in our school.
《琵琶行》中既交待秋天的背景又蕴含离别之意的句子是：____，____。
