The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow.
| A．should | B．must | C．will | D．can |
___ the twins is Lucy.
| A．taller |
| B．the taller |
| C．tallest |
| D．the tallest |
— 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 |