C. sandwiches
Feedback For the test sentence ‘John, could you buy two _______ (a sandwich)?’ we need to form the plural form of the noun count ‘sandwich’. We add -es to nouns ending in -ss; -ch; -s; -sh; -x: class - classes; watch - watches; gas - gases; wish - wishes; box – boxes. Therefore, we are to choose ANSWER 3 (sandwiches).