After questioning the man for six hours, the police ________ the information they wanted．

A．seized

B．recovered

C．appealed

D．obtained

At times the balance in nature is ________, resulting in a number of possibly unforeseen effects．

A．confused

B．puzzled

C．disturbed

D．troubled

The population of Africa is ________ so rapidly as to cause concern of the whole world．

A．expanding

B．stretching

C．extending

D．spreading

People should open the window in the morning to make air ________ in order to keep the indoor air fresh．

A．spread

B．remove

C．float

D．circulate

Leaders of many countries have been trying to ________ what it is that makes China develop so fast．

A．carry out

B．figure out

C．watch out

D．make out

The ________ of the passengers survived in the traffic accident except a woman and two children．

A．quantity

B．variety

C．number

D．majority

Progress so far has been very good．We are ________ confident that the work will be completed on time．

A．otherwise

B．therefore

C．however

D．somehow

It is ________ ill health that she is now not so active in the movement．

A．instead of

B．in place of

C．thanks to

D．in face of

It was obvious that the Climate Change Conference in Copenhagen became the ________ of media attention．

A．discovery

B．focus

C．summary

D．comment

Congratulations! It seemed that our boss was ________ with your work today．

A．dishonest

B．confused

C．satisfied

D．disturbed