Online classes

​Today, many famous universities are offering classes online to everyone for free. What are some of the most popular classes and why?

​Classes in computer science and (1.) _________________ are the most popular. Today, many people are studying these subjects. In the future, they are planning to work in tech because there are many jobs and the pay is good.

Classes about (2.) __________________ are also popular. Today, many people's lives are very busy, and this is hard. In class on this topic, The Science of Well-Being, is Yale University's most popular course ever.

Today, more people are studying or working in other countries. For this reason, many people are taking (3.) ___________________ classes. (English, Mandarin, Korean, and Spanish are the most popular.) Other people are preparing for an English-language (4.) __________________ like the TOEFL or IELTS.

At Harvard University, there is a famous class called Justice. In it, a professor from the university's (5.) _______________________ school talks about different social problems. He asks the question: "What's the right thing to do?" The class is interesting, and many people taki it for fun.