Fill in the blanks: a. The ladder is ____ the wall. (on/against/at) b. When alcohol is heated it gives ____ an explosive vapour.(of/off/out) c. I am not annoyed ____ her behaviour. (at/for/with) d. Sumitra feel ____ her bike last Monday. (by/from/off) e. He is always jealous ____ other's progress.. (for,/in/on)​