Is TOEFL training class useful?

You should still apply for TOEFL training class. You can apply for 15 day shift. You can learn some skills mentioned by the teacher, which will be of great help to you in learning TOEFL, so that you can avoid taking many detours!

If you want to teach yourself, I have several books for your reference, all of which are provided by TOEFL:

Wang TOEFL vocabulary. OG(ETS official guide to the new TOEFL test), complete guide to the new TOEFL test, Red delta, challenge TOEFL composition full marks.

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