D. I have done nothing to displease him how to change in passive voice

While changing into passive voice, the tense will never be changed.

Also, Inter-conversion of subject and object:

I have done nothing to displease him

I is Subject, nothing is object and the underlined words are a prepositional clause the position of which will remain the same in passive voice.

Passive Voice:

Nothing has been done by me to displease him.   (Tense i.e. Present perfect tense hasn't been changed)

sing because that is what they are doing in the sentence

explanation:

the simple predicate is the main verb in the predicate that tells what the subject does. example: my father fixed the dryer. read each sentence. draw a line under the complete predicate.

answer: a mother fears that the poor lighting poses a danger to the children who play there.