Hi Vitaly! I will make some notes below to try and help you. 1) Nobody must anything to anybody.* 2) Anybody must not anything to anybody.* *These two sentences do not have verbs. The word "must" is an auxiliary verb and cannot be used without another verb. You need to add a verb after "must" (in the infinitive form) to make these correct sentences. Example: Nobody must SAY anything to anybody. You must not give anything to anybody. 3) I give not anything to anybody.* 4) I give nothing to anybody.* 5) I give anything to nobody.* *To make simple sentences in negative form we usually need to use the auxiliary verbs do (I, you, we, they) or does (he, she, it) followed by "not" and then the verb. So the form looks like this: Subject (I, you, John...) + do/does + not + verb + complement Example: I do not give anything to anybody. I do not say anything to anybody. I hope this is helpful! Please let me know if you have any questions.

Avoid double negatives. (*)body and (*)one mean the same thing, so they are interchangeable. CORRECT: 1) Nobody must do anything bad to anybody else. 2) Everyone must not do anything bad to anybody/somebody. 3) I don't give anything to anybody. 4) I give nothing to anybody. (It means the same as #3.) 5) I give anything to nobody. (This doesn't sense because there is nobody there to give anything to.)