仙人们拜托帮帮小弟把句子改成被动语态~~~~谢谢啊。。

Taxis are not used very often (by people).

The service is included in the bill.

I think the doctoe should be sent for (by them) immdediately.

An appointment to see the doctor after school has been made (by him).

Only one of the letters has been typed (by me).

PS. 一般被动语态都不用提到动作主体，所以括号里的内容一般省略掉就行了。

1、tax doen't used very often by people
2.the service be incleded in bill
3.i think,they should be send for doctor immediately.
4.an appointment has been made to see the doctor after school
5.only one of the letters was tayped by me

taxis are not used often (by people)
the service is included by the bill
i think they should be sent for doctor immediately
an appointmernt to see the doctor after school has been made
only one of the letter have been typed

1,Taxies are not used very often by people.
2,The service was not included in the bill.
3,I think the doctor shoul