Whenfirsttothemarket,thecomput

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

A．introducing	B．being introduced
C．introduced	D．to be introduced

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I at the station half an hour ago, but the train yet.

A．arrive; didn’t come

B．was arriving; hadn’t come

C．arrived; hasn’t come

D．had arrived; didn’t come

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–----Do you know our town?
------No, this is the first time I       here.
A was
B. have been
C. came
D. am coming

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I my washing machine the whole morning. I must get it done before noon.

A．have repaired

B．am repairing

C．will repair

D．have been repairing

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-----Where _ you_ ?
------I got caught in the traffic, or I would have been here earlier.

A．did; go

B．had; gone

C．have; been

D．were; going

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A long time ago, I in the USA for two years.

A．have lived

B．had lived

C．was living

D．lived

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