请将下列句子改写为含有定语从句的复合句
问题描述：
请将下列句子改写为含有定语从句的复合句
Can you still remember the day?we made a decision to have a holiday on that day .
I'd like to have a friend.I can turst him and he would do me a favour when I'm in trouble.
I borrowed two books from the library.Both of them are to be returned within three weeks.
答
Can you still remember the day when we made a decision to have a holiday
I'd like to have a friend who(whom) I can turst and would do me a favour when I'm in trouble.
I borrowed two books from the library which (that) are to be returned within three weeks.