Charles Babbage is generally considered ________ the first computer. 
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A
to invent
B
inventing
C
to have invented
D
having invented
推荐题目
He set out early after supper_________ be late for the film.
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A
in order to not
B
so not as to
C
in not order to
D
so as not to
After completing and signing it, please return the form to us in the envelope ________.
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A
providing
B
provided
C
having provided
D
provide
 This temple is said to ______ by Lu Ban 3000 years ago.
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A
be designed
B
design
C
have been designed
D
have designed
___________ that he was in great danger, Eric walked deeper into the forest.
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A
Not realized
B
Not to realize
C
Not realizing
D
Not to have realized