Reading a great many books ________ of great help.

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They began to think about what use could be ________ such material.

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These machines look ________, but they are ________.

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A．same; of different kinds

B．the same; of different kind

C．the same; different kinds

D．the same; of different kinds

Our teacher reminded us to pay more attention to current ________in preparation for the coming entrance exams.

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The manager told us that the prices of TV sets would ________so I decided to wait another week to buy one.

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Have you________ your mother?

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The teacher ________ me to my son's seat.

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I ________ my birthday with friends in a restaurant.

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The woman is so genial that she will ________ wherever she goes.

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The audience wondered why the professor had not ________ yet.

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