He, _____ in a poor family, became one of the greatest writers in the world.
| A．as born | B．that is | C．who is | D．although born |
Nearly all educators believe that a challenging situation can often __________ the best qualities of a person.
| A．bring up | B．bring on |
| C．bring down | D．bring out |
We __________ that the two substances have combined to form the new material.
| A．suggest | B．conclude | C．concentrate | D．include |
The people of the town were __________ of the danger of flooding.
| A．warned | B．reminded | C．noticed | D．accused |
All finished, they sat down to enjoy __________ they thought the most delicious dinner.
| A．that | B．it | C．which | D．what |
Nowadays people attach more importance __________ the children's preschool education than before.
| A．in | B．to | C．of | D．about |