7. the most common rule for forming plural nouns is a. adding -es to the word. b. changing the y to i and adding -es. c. dropping the last letter and adding -ies. d. adding -s to the word.

Hi !

Let's take them one at a time :


A. Add -es if the noun ends in -o , -x , -s , -ss , -sh (ex:tomato -> tomtoes). There are quite a few nouns.


B.Change the y to i only if the nouns ends in y and there is a consonat before ( ex : butterfly -> butterflies ) . VERY FEW NOUNS


C.Almost the same thing as in B.


D.You can add -s to all the nouns that aren't end in -s,-o,-ss,-x,y,-sh and so on.ALMOST ALL THE WORDS.


So,the most common rule is D. adding -s to the word.


Have a nice day !

Changing y to I and adding es

Question 4 i think is expository