If you want to find a high price, you can try this institution, Acasso Foreign Education Network. One-on-one teaching by foreign teachers is also very cost-effective. These classes are outside 20 yuan. Now I will share their audition class with you, and get the address of the audition class for free: click on the free appointment, and the foreign teacher's audition class is worth 388 yuan.
Acasso Foreign Teachers Network allows domestic English learners to directly and seamlessly contact first-line oral English teachers and learn authentic English. The level of foreign teachers is not bad, even if they make mistakes or express mistakes, they can correct them immediately, and their pronunciation is also good, with high cost performance, and the class price is not higher than that of 20 yuan.
What other study questions are there? You can search Baidu for "acaso vivi teacher" to analyze and answer for you.
If you want more English learning resources, you can search "acaso official website Forum" for free download.