When the news came __________ the war broke out, he decided to serve in the army.
| A．since | B．which | C．that | D．because |
There's a feeling in me __________ we'll never know what a UFO is.
| A．that | B．which | C．of which | D．what |
My son was __________ of being a football player though he was weak and thin.
| A．previous | B．anxious | C．successful | D．ambitious |
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 |