You can't take her promises seriously, she never keeps her word.
她答应的事不用当真,她说话从来不算数。
He has a pair of shoes.
他有一双鞋。
Other books are for reading slowly and carefully. If it is a book on a subject that you are interested in, you will want to chew and digest it. That does not mean reading it too slowly. When you pick up a book for the first time, check that it is not to