She asked the librarian ( )can l borrow a book

She asked the librarian ( )can l borrow a book
把两句话连起来成为主从复合句就是：
She asked the librarian if /whether she can borrow a book.
宝贝勤学好问,天天进步!首字母是p开头的首字母是p开头的单词很多：


please
police
polite
parent
prepare
practicepolite的副词怎么写polite的副词是politely.