A. blind B. discover C. voice D. vet A. sauerkraut B. respectful C. ensue D. give a helping hand A. donate B. accessible C. mirror D. defy A. migrate B. organization C. obligation D. silly A. scheme B. volunteer C. province D. bus stop A. swan B. rim C. confident D. writing paper A. prize B. female C. comeback D. spaceport A. homework B. silver C. curious D. aftershock A. leftover B. be sure about C. train D. helpful A. mainly B. pay attention C. operation D. secondly