_____ important thing in life is to have a great aim, and ______ determination to attain it.
| A．An ; 不填 | B．A ; the | C．The ; the | D．The ; 不填 |
The most important thing about ancient civilizations is ____ part that they played in ____ history.
| A．不填; 不填 | B．a; the | C．the; the | D．the; 不填 |
----You didn’t come to the party yesterday.
---- ______? I’m not a party animal.
| A．How can I have | B．How would  I have |
C．Why should I have | D．Why must I have |
.----Will you be ____ this afternoon , John?
----It depends. I’ m afraid I’ll be called in by my boss.
| A．suitable | B．available | C．accurate | D．convenient |
. ----Jack, can you make a sentence to ________ the meaning of the new phrase?
----Well…
| A．show off | B．turn out | C．bring out | D．take in |
_____ he met with the difficulty did he realize the importance of group work.
| A．Even though | B．Not until | C．Only before | D．Ever since |