کار کردن روی مشکلات املایی

In this video, Alisha answers 5 questions.
- How can i improve my spelling mistakes?
- What the difference between "I'm looking" with "I've been looking"?
- What are the rules of semicolon (;), and when should I avoid it?
- In some languages a multiple-choice test called "an American test", so is it true that American tests are really (mostly) multiple choice?
- What's the differents between below, under, underneath, beneath, bottom, and down?