Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.

Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.

#102473

are to challenge

may be challenged

have been challenged

are challenging

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All school buses in the northwestern provinces    with satellite positioning devices next year.

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fitted

will be fitted

have been fitted

are fitted

--- Look at the terrible situation I am in! If only I ____ your advice.---Don’t worry.Try again.

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would follow

had followed

have followed

I am disappointed because I ______________my favourite writer yet.

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didn’t see

haven’t seen

don’t see

have not been seeing

---I hear you ______ abroad. ---That’s right. We’re going to live in Spain．

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are moving

have moved

move

will have moved

Many scientists believe sea levels ______ by more than one meter by the end of the 21st century.

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will be risen

will have risen

will have been

will be rising

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