Charles Babbage is generally considered to ______

Charles Babbage is generally considered to _______ the first computer.

#94390

to invent

inventing

to have invented

having invented

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_____ sweet and good, the birthday cake was soon eaten up by those children.

#93206

To taste

Tasting

Tasted

Having tasted

Can you imagine what difficulty he had ____ the work?

#89953

to do

doing

done

All flights___ because of the snowstorm, we decided to take the train.

#94777

were canceled　

had been canceled

having canceled

having been canceled

Reading is an experience quite different from watching TV; there are pictures ________ in your mind instead of before your eyes.

#89201

to form

form

forming

having formed

-The teacher told them ________ make so much noise.

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don’t

not

will not

not to

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