Which of the following sentences are in active voice ?

1.                      They sing songs in the assembly
2.                    A notice was sent by the manager
3.                  You gave him your pen.
4.                 He has built a house in his native place.

Choose the appropriate Passive Voice for the following sentence :

They were carrying the injured player off the field.

Find out the Active voice from the options :

find out the correct passive form for the italicized word/words :

He will do it.

Select the appropriate active voice for the italicized words :

The house next door has been bought by Anitha.

………..are the days when consumers were passive passengers with little or………choice over the design of the product.