Помогите present continium

PRESENT CONTINUOUS (не делай больше такой ошибки, умоляю, прошу)

----------1---------
2. he is cooking
3. you are standing
4. is swimming
5. are staying
6. is having
7. are building
8. am working
-------2--------
1. she is sitting on the floor
2. she isn't reading a book
3. she isn't playing the piano
4. she isn't laughing
5. she is wearing a hat
6. she isn't writing a letter
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present continuous - настоящее (present) длительное время, проще говоря, какой-нибудь процесс: Она плавает в реке ( плавает - процесс; к примеру, чтобы было понятнее: Она села на стул. ( села - единичное действие)
present continuous обоазуется одной из форм глагола to be (am, is, are)
i - am
he, she, it - is
мн. ч. (we, you, they) - are