Viết lại các câu sau: Complaining about the matter is useless now

Giai thich vi sao lai viet nhu the
46. Complaining about the matter is useless now.
 It is _____________________________________ .
47. It’s not a good idea to travel during the rush hour.
 It’s better to avoid ___________________________ .
48. I expect that he will get there by lunchtime.
 I expect him _______________________________ .
49. I remember someone telling me the news.
 I remember being_______________________ .
50. Could you turn the radio down, please?
Would you mind _________________________________