单项选择题

_____ in the late 1800’s, many of the coastline’s lighthouses remain standing today, having withstood the forces of nature for decades.

A.built
B.building
C.beenbuilt
D.havingbuilt
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单项选择题
Dr. Johnson is offering a three-hour workshop during _____she will share some perspective on effective time management.
A.whose
B.while
C.whatever
D.which
单项选择题
Yesterday the officers voted _____to offer large bonuses to high-performing employees.
A.commonly
B.increasingly
C.critically
D.unanimously
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