6. Would you like to decorate your room on your own? ( Want )

=> Do ..you want  to decorate your room by yourself?

7. During dinner she never watches TV

=>While ..eating dinner, she never watch tv

8. Jack likes painting portraits (Keen )

=> ..Jack is keen on paiting portraits

9. Both Jonh and Mary enjoy team sports ( So )

=> Jonh enjoys ..team sport and so does Mary

10. How about cycling to the country this weekend ( Cycling )

=> Let's ...go cycling to the country this weekend.

Giải thích: 1. would you like=do you want

2. during + vbare=while +ving

3. like=be keen on

4 both+...= ...and so do + O

5 how about=let's