Every means , but none proved .
A．have tried; a success B．have been tried; successful
C．has tried; to be successful D．has been tried; successful
It’s quite honor to be chairman of the conference.
A．///; the B．an ; /// C．a ; /// D．the; the
After decades of effort, the city is still trying to _____ how to stop smoking in public places.
A．try out B．let out C．figure out D．run out
Lawmakers have approved the measures_____ protecting the personal information of Web users.
A．to aim to B．aiming to C．aimed at D．are aimed at
After the war, a new school building was put up ______there had once been a theatre.
A．when B．in which C．the place where D．where
Michelle Obama said, “For Barack, success isn't about how much money you make; it's about the______ you make in people's lives.”
A．sense B．judgment C．way D．difference
