№1
1. are
2. have
3. go
4. am
5.is
6. is
7. cool
#2
1. There are many flowerpots in our classroom.
2. Susan wasn't on duty last week.
3. We are writing a test now.
4. There aren't any portraits in the maths classroom.
5. The bookcases are very big in the classroom.
#3
1. clean-dirty
2. dark-light
3. love-hate
4. bad-good
5. open-close
6. hardworking-lazy