We have done things we ought not to have done and ______ undone things we ought

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We have done things we ought not to have done and ______ undone things we ought to have done.

A．left　

B．leave

C．will leave

D．leaving

答案

解析

略

举一反三

.If the launch in 2005 is successful, China will be the third country ________its astronauts into space.

A．will send　

B．having sent

C．sending　

D．to send

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–--Was Linda at the party when you arrived?
----Yes, but she _______ home soon afterwards.

A．goes

B．had gone

C．is going

D．went

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It was playing computer games that _______ the boy plenty of time that he ________ doing
his lessons.

A．spent; must have been	B．cost; ought to have spent
C．wasted; wouldn’t have been	D．took; can’t have spent

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. Has anything _________ wrong with your car?

A．become

B．grown

C．gone

D．turned

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Several passages were found _________ when the book _________ me.

A．missing; returned	B．lost; was returned
C．gone; was returned to	D．disappeared; was returned to

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