－When does your plane take off?

－At 3∶00. m. tomorrow．I've just called the airport to ________ it．

A．confirm

B．argue

C．organize

D．intend

The special building in the middle of the square is the oldest wooden building ________．

A．in existence

B．in silence

C．in safety

D．in need

Alice read the letter with a ________ expression on her face, not knowing who sent it to her．

A．crowded

B．puzzled

C．satisfactory

D．pleasant

I'm planning to hold a party in the open air, but I can make no guarantees because it ________ the weather．

A．links with

B．depends on

C．connects to

D．decides on

The news that a jet ________ Russian mountains killing 88 was one of the worst things I have known in the past five years．

A．crashed down

B．crashed into

C．met with

D．came across

－What are the differences between the American and British ________ of government?

－You can find the answer on the Internet．

A．design

B．theory

C．system

D．mass

Though most people know that smoking ________ the risk of cancer, it is still hard for them to give it up．

A．multiplies

B．adds

C．combines

D．gains

There was a ________ quarrel between the husband and the wife; after that the wife left home and never came back．

A．sensitive

B．serious

C．violent

D．strict

The woman's illness ________ all the doctors in this hospital; they couldn't find the cause．

A．prevented

B．puzzled

C．exhausted

D．consulted

The top leaders of the two countries are holding talks in a friendly ________．

A．atmosphere

B．state

C．situation

D．phenomenon