Active Voice into Passive voice of Critical Sentences

Question 1. Whom do you want here?
Question 2.Sugar sells by the kilogram.
Question 3. They Called him a wise man.

Answer1: Who is wanted here by you?

Answer2: Sugar is sold by the kilogram.

Answer3: He was called wise man by them.

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Question 1. You surprise me.
Question 2. Delete the useless SMS.
Question 3. Divert all my calls to my cellphone.
Question 4 . Take this medicine only if needed.
Question 4 . The children laughed at the beggar.

Answer 1: I was surprised by you.

Answer 2: Useless SMS should be deleted

Answer 3: All my calls should be diverted to my cellphone.

Answer 4: This medicine must be taken only if needed.

Answer 4: The beggar was laughed at by the children.