Our room requires ________．Whose turn is it ________ the cleaning?

A．cleaning; to do

B．to clean; to do

C．to be cleaned; doing

D．being cleaned; doing

Though ________ money, his parents managed to send him to university．

A．lacked

B．lacking of

C．lacking

D．lacked in

His report was so exciting that it was ________ interrupted by applause．

A．constantly

B．constant

C．seldom

D．never

They'll be here soon．________ we'll have some coffee．

A．Meanwhile

B．Whenever

C．When

D．While

We must work hard to ________ a good knowledge of English．

A．take

B．acquire

C．catch

D．hold

A driver should ________ the road when ________．

A．concentrate on; drive

B．concentrate in; driving

C．concentrate to; drove

D．concentrate on; driving

They are ________ for new skills so that they can be qualified for the jobs in various field________ which they are strange．

A．hoping; for

B．anxious; for

C．eager; to

D．worried to

People in China are proud of ________ they have achieved in the past ten years．

A．that

B．which

C．what

D．how

We went through a period ________ communications were very difficult in the rural areas．

A．which

B．whose

C．in which

D．with which

It has been proved ________ eating vegetables in childhood helps to protect you agents serious illnesses in later life．

A．if

B．because

C．when

D．that