Not until I failed in the exam __________ how much time I had wasted.

A．didn’t I realize                                           B．did I realize           

C．I didn’t realize                                           D．I realized

As the house is made of wood, it will easily __________.

A．be on fire                   B．make a fire          C．catch fire             D．set fire

― Why didn’t the conference begin on time?

― For the __________ of David, the manager.

A．a(chǎn)bsence                      B．missing               C．shortage              D．reason

If we know more about how to give __________ first aid, we may help people in __________ emergency.

A．/; the                         B．the; an                C．the;/                   D./; an

― Hey! Taxi!

― __________

― The Airport, please.

A．Good morning, sir.       B．What to do, sir?

C．Nice to see you, sir.     D．Where to go, sir?

quiz                  A．a(chǎn)side           B．historical       C．biology         D．design

architecture       A．branch        B．switch           C．a(chǎn)pproach       D．school

breath                A．threat          B．weave           C．cheat             D．scream

within               A．theory         B．truth             C．bathe            D．strength

passion              A．engage        B．talent            C．addict           D．medical