—Sorry,sir.Ican’tanswerthisque

—Sorry, sir. I can’t answer this question.
---Well, you are supposed______ this part of history.

A．reading

B．to be reading

C．to have read

D．having read

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相关试题

Mr. White as well as his friends ________ a number of countries in the past few years.

A．has travelled

B．have travelled

C．had travelled

D．travelled

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Helen always helps her mother even though going to school_______ most of her day.

A．takes up

B．makes up

C．saves up

D．puts up

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She will fly to Washington, ________ she can enjoy herself.

A．that

B．which

C．where

D．/

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These experiences ______ me _____ the drug’s harmful effects.

A．are convinced; by

B．convinced; of

C．were convinced; by

D．convinced; at

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— Did Alan enjoy seeing his old friends yesterday?
— Yes, he did. He _____ his old friends for a long time.

A．didn’t see

B．wouldn’t see

C．hasn’t seen

D．hadn’t seen

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