A. take part in B. network C. review D. how much A. dreary B. launch C. ecosystem D. rim A. legendary B. afford C. parcel D. impossible A. physicist B. energetic C. fin D. valid A. fake B. reflect C. quickly D. work A. greenhouse B. take action C. interesting D. teach English A. forty-four B. crowd C. rarely D. shark A. drink to B. invisible C. turn off D. come on A. plank B. burglary C. for a start D. cruel A. lack B. deaf C. coal D. hunter