A. understand B. understanding C. misunderstanding D. misunderstand
A. care B. careless C. carelessness D. caring
A. different B. differ from C. differ D. difference
A. western B. westerns C. westerners D. west
A. rich B. richen C. enrich D. inrich
A. patiently B. impatient C. patient D. patience
A. Fortune B. Fortunately C. Unfortunately D. Unfortunate
A. organization B. organize C. organizer D. organized
A. player B. worker C. piano D. pianist
A. danger B. dangerous C. dangers D. dangered