A. advantage B. backstage C. we D. humanity A. metropolitan B. desertification C. swarm D. goat A. apparently B. radium C. scrub D. submerge A. care B. sheltered C. settle down D. wane A. contribution B. polite C. polish D. joy A. fragile B. supreme C. stray D. bubble A. privacy B. recur C. recede D. stumble A. charm B. Kituro C. mortally D. be weak in A. perturb B. diver C. obstacle D. think twice A. territory B. herb C. punchline D. guestroom