Charles Babbage is generally considered ________ the first computer. A．to invent

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Charles Babbage is generally considered ________ the first computer.

A．to invent

B．inventing

C．to have invented

D．having invented

答案

解析

被动语态后用不定式连接，根据句意用完成式。

举一反三

. He said he would rather not _______ it right now.

A．doing

B．to do

C．do

D．to be doing

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She did nothing _______ at the photo.

A．except look

B．but to look

C．except to look

D．but looking

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He reached the station _____ only _____ that the train had just left.

A．tired；learned

B．tiring；learning

C．to tire；to learn

D．tired；to learn

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John, you must get your room ________ after breakfast.

A．to be cleaned

B．to clean

C．cleaning

D．cleaned

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---They like going to sleep early, don’t they?
---Yes. They are accustomed _____very late.

A．to stay up

B．to not stay up

C．to staying up

D．to not staying up

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