【单选题】
Before?he came to China, he??[填空]Chinese for three years.
①
have learned
②
had learned
③
learned
④
learning
【单选题】
he park has been built and it will be open _____ three years
①
A. in
②
B.for
③
C.on
④
D.after
【单选题】
The professor has been [填空]at the university for over thirty years.
①
teach
②
taught
③
teaching
④
will teach
【单选题】
The population of many Alaskan cities has __________ doubled in the past three years.
①
larger than
②
as great as
③
more than
④
as many as
【判断题】
Before he began to study in the university, he had worked in a company for three years.
①
正确
②
错误
【单选题】
He ________ Alice for ten years.
①
married to
②
has married to
③
has married
④
has been married to