A. recycling B. warmly C. basic D. paper A. weren't B. achievement C. economic D. huge A. variant B. in need C. six D. grow A. koala B. moor C. take photos D. expression A. undue B. baking C. penguin D. vaccination A. all the time B. altogether C. wear D. by school bus A. city-state B. path C. clutter D. pig A. modern B. helpful C. except D. spent A. elephant B. keep in touch with C. contamination D. mean A. through B. stack C. hopeless D. accomplishment