Martin Cooper , a US researcher , was considered _______ the first cell phone .
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A
invented
B
to invent
C
having invented
D
to have invented
推荐题目
A terrible earthquake struck this country, _______ thousands of peopledead and more missing．
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A
caused
B
causing
C
having caused
D
to cause
Five people won the “China’s Green Figure” award, a title ______ to ordinary people for their contributions to environmental protection.
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A
being given
B
is given
C
given
D
was given
______ the task in time, we had to work late into the night.
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A
Finished
B
Finishing
C
To finish
D
Having finished
—You were brave enough to raise objection at the meeting.—Well, now I regret _______ that.
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A
to do
B
to be doing
C
to have done
D
having done