Where would you find an entrance hall that is used by a single family? Choose the most suitable option to answer the above question. Options：  A. person  B. large building  C. school  D. house  E. mansion
D
------
Sky diving scared him, once they jumped out of the plane he began losing consciousness while what? Choose the most suitable option to answer the above question. Options：  A. injury  B. death  C. playing uno  D. coma  E. falling down
E
------
Where could you be most likely to find containers with hydrogen? Choose the most suitable option to answer the above question. Options：  A. air  B. chemistry lab  C. ocean  D. universe  E. barrel
B
------
The elephant was asked to recall a number mentioned earlier, why was it asked this? Choose the most suitable option to answer the above question. Options：  A. breathe  B. experience sadness  C. forget nothing  D. remember everything  E. to get food
D
------