from practice we can learn can't be learned from books

from practice we can learn ____can't be learned from books
A who B that C which D what
last sunday i send him some flowers and cards as an e______of thanks .
能告诉为什么吗

The student’s study interest is developed from practice. 有没有语法错误? "Theory comes from practice has long been proved" 请问这句话的错误在哪里？谢谢 Social Practice common practice 缺少对象: 'select * from info w' practice什么意思 practise与practice 改错 “Practice makes perfect” 什么是 Professor of Practice practise practice 哪个常用