1. No matter how small a kindness is, it will not be wasted. -Aesop's fable. Don't make small moves, don't donate. As the saying goes, "Don't do small things with kindness", the ancient Greek version seems to pay more attention to utility, telling you that doing good will never be in vain.

Ever: usually used in negative sentences and interrogative sentences, or in sentences containing elements expressing doubts or conditions, usually before verbs) at any time; Nothing has ever happened in this village. Nothing has ever happened in this village.

This is an emphasis sentence, emphasizing the subject of the original sentence, "who is not right, but what is right."

3. the first empty option is all vs sth, and the second empty option what is followed by an object clause "do what I can"

4. Choosing infinitive means being B means being. D lacks As.