_______they visited the Science Museum, they showed great interest in everything they saw.
A For the first time B. At first
C. At the first time D. The first time
You _______ an A on your term paper, but you quoted a little bit more from others' papers.
| A．should receive | B．could have received |
| C．would receive | D．must have received |
Tom looked upon the test as an obstacle _____ his classmates regarded it as a challenge.
| A．while | B．because | C．unless | D．if |
You don’t have to ______every little incident in your life.
| A．settle down | B．break down | C．set up | D．set down |
--Why are they _____ the forest?
--They are _____ a thief.
| A．searching; searching | B．searching for; searching |
| C．searching; searching for | D．searching for; searching for |
Facing the enemies, Liu Hulan ______ .
| A．would die than give in | B．rather die than give in |
| C．preferred to die rather than give in | D．rather than die prefer give in |