【判断题】
The population of beijing has been increased for ten years.
【单选题】
____ you know, David has been well lately.
【单选题】
He has been to Beijing . So [填空] I.
【判断题】
A new bridge has been built on Xinan River.
【单选题】
he park has been built and it will be open _____ three years
【单选题】
Clothing made of plastic fibres has certain advantages
over ____ made of natural fibres like cotton, wool,
or silk.
【单选题】
Our boss, Mr. Thompson, _____a raise in salary for ages but noting has happened yet.
【单选题】
There has been an atmosphere of ( ) around here for a few days now.
【单选题】
She was wondering whether he has been writing anything new ____
【单选题】
The professor has been [填空]at the university for over thirty years.