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單項選擇題

If you get into difficulties, don"t hesitate to （） help.

A．a(chǎn)sk about
B．a(chǎn)sk after
C．a(chǎn)sk for
D．a(chǎn)sk in

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單項選擇題

If I have a good sleep I"ll be （） to work out the problem.

A．possible
B．a(chǎn)ble
C．capable
D．reasonable

單項選擇題

The football match was （） on account of rain.

A．called up
B．called on
C．called off
D．called for

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