Change the sentences into the passive

1. The teacher can give him good marks because he is an excellent student. 

→ He can be given good mark from the teacher because he is an excellent student. 

    Good marks can be given to him by the teacher because he is an excellent student. 

2. Are they asking the police about the way?

→ Are the police being asked about the way ?

3. How long have Peter waited for the doctor ?

→ How long has the doctor been waited for by Peter ?

4. Why do we have to keep these chemicals in the safe place ?

→ Why are these chemicals have to be kept in the safe place ?

Change the sentences into the passive

1. The teacher can give him good marks because he is an excellent student.

-> Good marks can be given him by the teacher because he is an excellent student

2. Are they asking the police about the way?

-> Are the police being asked about the way ?

3. How long have Peter wait for the doctor?

-> How long has the doctor been waited for by Peter ?

4. Why do we have to keep these chemicals in the safe place?

-> Why are these chemicals have to be kept in the safe place ?