6. Complaining about the matter is useless now.

->  It is ………useless to complain about the matter……………………………………...

7. It’s not a good idea to travel during the rush hour.

->  It’s better to avoid …travelling during the rush hour.……………………………..

8. I expect that he will get there by lunch time.

->  I expect him …to get there by lunch time.………………………………….

9. I remember someone telling me the news.

-> I remember being …told the news.……………………………

10. Could you turn the radio dơn, please?

-> Would you mind …turning  the radio down……………………………