Some experts think the wolf's team spirit for survival is ____ is needed in today’s competitive culture.
.People who do not smoke have less ____________ of suffering from lung cancer than those who do so.
In April, 2009,President Hu inspected the warships in Qingdao, ______ the 60th anniversary of the founding of the PLA Navy.
Hard as a teacher may try, he can’t ______to make all his students make a difference in study, letting alone in life.
Hearing the news that he had been ______as general manager of the big company, he ______ with excitement and joy, forgetting that he was showing some visitors around.
Prices keep _______and people have to keep a close eye on their wallet.