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【单选题】
Our factory has ____ for years.

many fire equipments
much equipment of fire
many equipments of fire
much fire equipment
【单选题】
Great changes __________ in our institute in the last few years.

have taken place
has taken place
took place
had taken place
【单选题】
Tom has been a vegetarian ____ principle for years.

in
on
for
by
【判断题】
He has been in china for three years.

正确
错误
【判断题】
The population of beijing has been increased for ten years.

正确
错误
【单选题】
She has worked here_______many years.

since
for
during
【单选题】
The professor has been [填空]at the university for over thirty years.

teach
taught
teaching
will teach
【单选题】
The population of many Alaskan cities has __________ doubled in the past three years.

larger than
as great as
more than
as many as
【单选题】
Lucy has been a student there for nearly one and [填空] half years.

a
an
the
/
【单选题】
He ________ Alice for ten years.

married to
has married to
has married
has been married to