What is your name

What is the difference between foam, spume, lather, spume ?

What thing makes your nerves calm down during the work pressure?

What was your main reason for starting to learn Korean? (e.g., K-Pop, dramas, movies, travel, friends, work, etc.)

Choose the correct answer.

Hello, everybody，mingyuejishiyou ,bajiuwenqingtian

I want to find a partner who can practice english with me .I can practice chinese with you.Do you want to attend?

I have a sentence: "After he learned/had learned about the benefits of regular sleep, he began going to bed early." Please help me tell if I should use past simple or past perfect in the first clause.