用被动语态改写句子

改写后的句子:
1.A concert is going to be given by the singer.
2.It used to be done this way (by them). (原句thet字误应改为they)
3.It used to be done this way by Nancy. (这里不能用be used to结构)
4.The snow had to be cleaned from the job easily (by them).
5. Is the job able to be finished easily by Margaret?
6.He was told not to come here again(by me).
7.A lot of time was wasted discussing unimportant things (by them).
8.The books had to be given back (by us);they was not allowed to be taken home(by us)
9.This could be done much more easily by a machine.
10.You are wanted (by someone) on the phone.
11.Martin was noticed (by them) to come in with an empty bag in his hand.

1.a concert is going to be given by the singer