Copernicus dedared late in the 15th century, “The earth revolves round the sun.”

Copernicus declared late in 15th century that the earth________ round the sun.

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By the time I got to the bus stop, the first bus ________.

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Mr. Hawthorn spent the weekend in the country as he ________ to the office on Saturday.

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________ to think of Edgar Allan Poe's poetry as being more music than meaning.

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I remember ________ to their party, but I ________ the invitation in the office.

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A．to be invited; have forgotten

B．to invite; forget

C．being invited; have left

D．inviting; am leaving

Only when you ________ English every day _______ the language well.

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A．will keep on practising; you can learn

B．keep on practising; can you learn

C．keep practising; will you tell

D．stick to practising; you will be able to improve

The truth is ________.

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Tomatoes that _____ “love apples” when they first arrived in England ______now very popular in the world.

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A． were called...are　　　　B．called...is

C． had been called...is　　　D． has called...are

The problem is ________ .

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A．not who will go but who will stay

B．that who will go but who will stay

C．that will go

D．will stay

A policeman found that an old man _______ so he telephoned an ambulance immediately.

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A．who was injured seriously

B．who had been injured seriously

C．seriously injured

D．was seriously injured