We have to be quiet in the library划线提问（ be quiet ）

We have to be quiet in the library划线提问（ be quiet ） We have to be quiet in the library We also have to be quiet in the library to,have,be,the,library,do,we,quiet,in(?) I have to be quiet in the office .就划线部分提问.划线部分是：be quiet and we also have to be quiet in the library为什么不说and we have We must be quiet in the library. to,have,be,the,library,do,we,quiet,in?there,lot,school,of,ru Do we ____ (must,have to) be quiet in the shool library? oh ,and we also have to be quiet in the library 变否定句 We should be quiet in the library.(改为祈使句） we should be quiet in the library.改为祈使句