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科目： 來源：不詳 題型：單選題


.  Three hours ______ enough for us to finish the task.
A．a(chǎn)reB．hasC．isD．Were

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科目： 來源：不詳 題型：單選題


. Many a student ______ the importance of learning a foreign language.
A．have realizedB．has realizeC．have been realizedD．has been realized

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科目： 來源：不詳 題型：單選題


.  The gas works ______ near the city.
A．isB．a(chǎn)reC．wereD．Be

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科目： 來源：不詳 題型：單選題


.  The surroundings of his house ______ clean now.
A．isB．a(chǎn)reC．wasD．Were

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科目： 來源：不詳 題型：單選題


. The public ______ generous in their contributions to the earthquake victims.
A．isB．wasC．a(chǎn)reD．has been

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科目： 來源：不詳 題型：單選題


. Cattle ______ on the hillside.
A．grazesB．is grazingC．was grazingD．were grazing

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科目： 來源：不詳 題型：單選題


. Her politics ______ neither conservative nor liberal.
A．isB．a(chǎn)reC．wasD．has been

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科目： 來源：不詳 題型：單選題


. Measles ______ a kind of infectious illness.
A．isB．a(chǎn)reC．wereD．have been

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科目： 來源：不詳 題型：單選題


. Tom is the only one of the stall members who ______ to be promoted.
A．is goingB．a(chǎn)re goingC．has been goingD．have been going

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科目： 來源：不詳 題型：單選題


. What caused the accident ______ on the road.
A．were stoneB．were stonesC．was stoneD．was stones

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