E-shopping, when properly ________, can save us a lot of time and energy．

being done

done

doing

is done

We should never ever forget about the war in Iraq and the sufferings(苦难)________ caused to the people there．

it

which

that

what

In China, ________ car is getting to be ________ popular means of transport．

the; the

a;/

the; a

a; the

Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ________ aims to provide better service to travellers from outside the city．

where

that

which

it

Professor Smith, along with his assistants, ________ on the project day and night to meet the deadline．

work

working

are working

is working

________ your composition carefully, some spelling mistakes can be avoided．

Having checked

Check

If you check

To check

It remains doubtful whether the project ________ next month will bring profits to the company．

accomplished

to be accomplished

having accomplished

being accomplished

It is ________ the customers’ needs that has made chain stores so popular in big cities in China．

meeting

met

to have met

being met

The young man insisted that he ________ nothing wrong and ________ free．

did, set

had done, must be set

do, be set

had done, should be set

When first ________ to the market, the computer software was not a success due to its complexity in operation．

introducing

being introduced

introduced

to be introduced