Verified answer

2) Yuri and Masha have got green chairs.

3) Masha hasn’t got a clock.

4) Yuri hasn’t got a puppy.

5) Masha has got a TV.

6) Yuri and Masha have got a bike.  (хотя у них не велосипеды, а плакат с велосипедом)

7) Yuri hasn’t got a TV.

8) Masha hasn’t got a robot.