Henry Ford's introduction of the production line greatly reduced the time it took _____.

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A．to make a car　　　　B．for buying a car

C．designing a car　　　D．a car to repair

_____, I think, and the problems could be settled.

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A．If you double your efforts

B．So long as you keep your spirits

C．A bit more efforts

D．Making great efforts

Every new thought or idea has to ________ what we already know.

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_____ a mobile phone can you ring _____ you want to talk with.

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A．Using; whoever　　　 B．Only on; whomever

C．By; whom　　　　　　D．With; who

The photos are kept in that cupboard, ________ we found our parents' old photos.

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With the guide ________ the way, we had no ________ finding my uncle's address.

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This time in came a fat man. He rubbed his hand all the time as if he ________ them.

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I'm sorry you told him the secret. I wish you ________ him it.

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________ a. free man, he is now in chains.

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－Can I help you, sir?

－Yes. I bought this radio here yesterday, but it ________.

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