12.→This house and these cars are going to be painted for Christmas day by the Greens(Thì Tương Lai Gần)

13.→The cats had been fed by Ann before she went to the cinema(Thì Qúa Khứ Hoàn Thành)

14.→The pollution problems have been discussed by the students since last week(Thì Hiện Tại Hoàn Thành)

15.→Has the most valuable painting in the national museum been stolen by the thieves ?(Thì Hiện Tại Hoàn Thành)

16.→The new president will be interviewed on TV(Thì Tương Lai Đơn)

17.→How many languages are spoken in Canada ?(Thì Hiện Tại Đơn)

18.→Are those shoes going to be repaired ?(Thì Tương Lai Gần)

19.→His nose has been broken in a football match(Thì Hiện Tại Hoàn Thành)

20.→Have the above sentences been finished ?(Thì Hiện Tại Hoàn Thành)