By the time Jack returned home from England, his son  _______  from college.
#100009
A
graduated
B
has graduated
C
had been graduating
D
had graduated
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One of the most famous monuments _____the country by France.
#103301
A
was presented to
B
was presented with
C
was awarded to
D
was awarded with
With the development of science,more new technology      to the fields of IT.
#104546
A
has introduced
B
is being introduced
C
is introduced
D
was introduced