Everyone can attend, and Tsinghua Peking University is often attended, unless it is a small class and a large classroom, nobody cares.

Explanation of audit:

1. Attend the meeting without the right to speak and vote.

2. Informal classes.

3. Attend the meeting as a representative without voting rights.

Make sentences:

First, the old man's memories are full of poetry, and her two grandchildren are also fascinated by it.

Secondly, he studied in Tsinghua University.

3. Can I sit in on your "Intermediate Hitai" course?

Fourth, the proverb 13: 18, "If you close your eyes, you will be poor, and if you are humiliated, you will be humiliated; If you are good at training, you will be respected. " .

If I hadn't dropped out of school, I wouldn't have taken the calligraphy class, so the personal computer might not have such a beautiful interface.