We need to bring our books, because to be coupled in teaching and practice. When we do not understand, you can look in the book and to the work, such as the group, make up dialogue. If we do not, for example, you can see the conversation in the book. It is very important. If we do not bring. Time, we will not understand. If you do not see in the book. If you do not bring. Some teachers may admonish or some of you, it will subtract points.
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