_________ that he was in great danger，Eric walked deeper into the forest．
| A．Not realized |
| B．Not to realize |
| C．Not realizing |
| D．Not to have realized |
— What do you ___ that store?
— I think it has the best ___ clothes.
| A．think of; quality |
| B．like; quality |
| C．think; screen |
| D．like; service |
A 100-year-old man ran a marathon(马拉松) in Toronto on Sunday. He became the ___ person to complete the long distance running in the world.
| A．youngest |
| B．best |
| C．biggest |
| D．oldest |
The population problem may be ___ one of the world today.
| A．the most |
| B．most difficult |
| C．the greatest |
| D．more interesting |
Mary is the youngest ___ the three girl.
| A．in |
| B．than |
| C．of |
| D．at |
Most people like Jazz 107.9 FM, because it ___ very beautiful.
| A．makes |
| B．takes |
| C．listens |
| D．plays |