A. mixture B. carbon dioxide C. poem D. rush A. engineering B. whole grains C. cast down D. rickets A. genuine B. heavy C. endow D. hydro-electric A. bat B. talent C. hurriedly D. accommodate A. rabbit B. foul C. foggy D. forgery A. grandparent B. observatory C. scanty D. bookseller A. cough B. co-founder C. crash D. be likely to A. inspection B. make sense C. go sightseeing D. abandon A. unpaid B. impatient C. assistance D. generate A. easy B. literature C. historical D. dirty