Every few years, the coal workers _________ their lungs X-rayed to ensure their health．

are having

have

have had

had had

Their new bridge is being built now, which is said to be _________ the old one．

the length three times of

three times the length of

three times as longer as

three times the length as

The audience were _________ the performance of Chinese athletes at the 21^st Winter Olympics．

impressed by

impressed on

interesting in

expressed by

I feel excited because our class won the _________ argument．

living

alive

live

lively

I don’t believe in him．You know, what he said doesn’t _________ what he did．

agree with

agree to

agree on

agree upon

The Swede stood quite _________, except that his lips moved slightly．

calm

still

silent

quiet

Charles Babbage is generally considered _________ the first computer．

to invent

inventing

to have invented

having invented

Eric received training in computer for one year, _________ he found a job in a big company．

after which

after that

after it

after this

Britain has recently had a high level of unemployment, but the same is true _________ many other countries．

at

from

of

to

Mr．White prefers _________ some voluntary work in a local hospital rather than _________ nothing at all all day long．

to doing; do

to do; to do

to do; do

doing; to do