In the quiet darkness, I could hear someone _______ the door and go upstairs.A．o

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In the quiet darkness, I could hear someone _______ the door and go upstairs.

A．open

B．to open

C．opened

D．to be opening

答案

解析

略

举一反三

Personal relationships ______ over years may be lost when we move houses.

A．building up

B．built up

C．having built up

D．to be built up

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Partly ______ about his lost love, he buried himself in office work.

A．forgetting

B．to have forgot

C．to forget

D．having forgot

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Beijing has a population of 17 million, ________ it one of the largest cities in China.

A．making

B．makes

C．made

D．to make

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To his disappointment,the opinion he had stuck _____out wrong.

A．to turn

B．to turning

C．to turned

D．to be turned

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_______ your answers with those at the back of the book to see if they are right.

A．To compare

B．Compared

C．Compare

D．Comparing

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