¿cómo se llama la mayor plaza del centro histórico?

How would you express the following question in english? : ¿cuántos libros hay? a. there are so many books. c. how many books are there? b. how much are the book? d. are the books many?

Las calles estén sucias. a. es recomendable que b. es una vergüenza que c. es preferible que d. es preciso que

You a) you do not need the belt. he b) mr. robinson, needs to sing in music class. you c) you need to study in science class. i d) i do not need a uniform at my school.