.Itothetopofthetree,butIfellof

. I ____ to the top of the tree, but I fell off it and hurt my leg.

A．must have climbed	B．was able to climb
C．could have climbed	D．should have climbed

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相关试题

. --- Is Tom still smoking?
　--- No. By next Saturday he ______ for a whole month without smoking a single cigarette.

A．will be	B．will have gone
C．will have been	D．has been going

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I used to drink a lot of tea but these days I ______ coffee.

A．prefer	B．preferred
C．had preferred	D．am preferring

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The train ______ at the present speed until it reaches the foot of the mountain at about nine o’clock tonight.

A．went

B．is going

C．goes

D．will be going

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--- Did he notice you enter the room?
　--- I don’t think so. He ______ to the radio with his eyes shut.

A．listened	B．was listening
C．has listened	D．had listened

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--- Where do you think ______ he ______ the computer?
　--- Sorry. I have no idea.

A．has; bought	B．不填; bought
C．did; buy	D．不填; buys

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