... teachers. 2 You add `-s' to form the plural of most nouns. book* booksschool* schools You add `-es' to nouns ending in `-ss', `-ch', `-s', `-sh', or `-x'. class* ... nouns ending in `-o' add `-s', and some add `-es'. photo* photos piano* pianos hero* heroes potato* potatoes Nouns ending in a consonant and `-y' change to `-ies'. country* ... In `wh'-questions, you put the `wh'-word first. If the `wh'-word is the subject, you put the verb group next. Which came first? Who could have done it? If the `wh'-word is the...