Thetotherocketgoingintospacewe

The __________ to the rocket going into space went wrong, and as a result it exploded and fell into the sea.

A．mark

B．sign

C．symbol

D．signal

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The loss has not yet been _______accurately ,but it is believed to be well beyond a hundred million dollars .

A．calculated

B．considered

C．completed

D．controlled

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Over time the memory of the computer ________so much that it never forgets anything it has been told .

A．develops

B．is developing

C．developed

D．has developed

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The mayor of Beijing said that all construction work for the Beijing Olympics _______by the year 2006 .

A．was completed

B．had been completed

C．has been completed

D．is completed

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She worked _______a clerk in a government department after graduating from college .

A．for

B．as

C．on

D．at

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The city was destroyed by an earthquake and it ________nearly five years before everything came back to normal .

A．cost

B．spend

C．took

D．used

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